Performance Analysis of sub-6 GHz/mmWave NOMA Hybrid-HetNets Using Partial CSI Pragya Swami, Mukesh Kumar Mishra, Vimal Bhatia, Tharmalingam Ratnarajah, Aditya Trivedi IEEE Transactions on Vehicular Technology, 2022 The ever-increasing number of wireless users (or devices) and their varied demand require the need for an advanced architecture for the future wireless network. To support massive connectivity, non-orthogonal multiple access (NOMA) has been recognized as a promising solution. NOMA increases the number of simultaneous connections using available resources for users with varying demands. Furthermore, recent measurements and experiments suggest that wide underutilized bandwidth available at millimeter-wave (mmWave) frequencies provide high data rate and therefore are capable of addressing the issue of spectrum scarcity at sub-6 GHz bands utilized by the 4 G network. Consequently, co-existence of multi-radio access technologies (RATs) for 5 G and beyond networks has been of interest to both industries and academia. In this context, this work studies the co-existence of the two RATs, namely, sub-6 GHz and mmWave communication using NOMA-enabled hybrid heterogeneous network (NOMA-HHN) for massive connectivity. The application of NOMA requires ordering users, which in turn requires the knowledge of users' channel state information (CSI). However, gathering and processing CSI of such a large number of users is difficult to implement in practice. Thus, a solution based on partial CSI is proposed. Additionally, a feedback scheme for user scheduling and RAT selection using dual association is proposed to reduce the initial access delay in beam-training at the mmWave network. Moreover, utilizing directional nature of the mmWave communication, random beamforming is used to reduce system overhead in a network with massive users. The analytical results are confirmed using Monte-Carlo simulation, and various significant advantages are noted for the proposed NOMA-HHN over existing architectures.
Outage and ASE Analyses for Power Controlled D2D Communication Praveen Pawar, Aditya Trivedi, Mukesh Kumar Mishra IEEE Systems Journal, 2020 In fifth-generation technology, device-to-device (D2D) communication underlaid with a cellular network provides a feasible solution for proximity-based wireless applications and services. D2D communication allows a direct connection between two devices without traversing through the base station. It can potentially reduce the data traffic in the cellular networks with improved spectral and energy efficiency. However, interference management is a primary concern when D2D links utilize the same resources occupied by cellular users. In this paper, we propose a location-based power control approach to mitigate the severe interference components for underlaying D2D communication cellular network for multicell scenario. Moreover, outage analysis for the cellular user as well as D2D user is carried out by using the tools from stochastic geometry. Outage performance is further improved by employing a cooperation approach that also enables D2D user’s power saving. Further, area spectral efficiency (ASE) analysis is performed using the proposed power control and cooperation approach for the overall system model. We obtain the optimal D2D user density to maximize the ASE. Finally, the numerical results are presented to validate the analytic observations of the proposed framework.
Performance Analysis of NOMA Enabled Hybrid Network with Limited Feedback Pragya Swami, Mukesh Kumar Mishra, Vimal Bhatia, Tharmalingam Ratnarajah IEEE Transactions on Vehicular Technology, 2020 This paper investigates the coexistence of multi radio access technology (RAT) using Ultra High Frequency (UHF) small base station (SBS) and millimeter Wave (mmWave) SBS tier in a heterogeneous network (HetNet). To support large number of users, non-orthogonal multiple access (NOMA) is used in the SBS tier. For NOMA, the SBS needs to obtain users’ channel state information (CSI) to determine their ordering. Acquiring CSI at the SBS is a challenging task due to the massively increased number of users. The existing literature uses limited feedback from the users as a potential solution to assist the SBS in user ordering, when perfect CSI is not known at the base station. The limited feedback from the users in the existing literature is used only for user ordering. However, in the proposed work, unlike using limited feedback only for user ordering, the usage of limited feedback from the users is twofold. The first one is for the user ordering and the second is for the RAT selection. The impact of the proposed feedback system is analyzed in a NOMA enabled hybrid UHF/mmWave downlink HetNet. Numerical results show that the proposed feedback system achieves significant improvement in the outage probability.
Outage probability of ultra high frequency and millimeter wave based hetnets with NOMA Pragya Swami, Mukesh Kumar Mishra, Vimal Bhatia, Tharmalingam Ratnarajah Proceedings of the International Symposium on Wireless Communication Systems, 2019 This paper studies the outage performance of heterogeneous network consisting of ultra high frequency base stations (UHBSs) and millimeter wave base stations (MWBSs). Offloading to MWBS is performed based on the average received power from the base stations of the two tiers, i.e., UHBS and MWBS tier. Both the UHBS and MWBS employ non-orthogonal multiple access (NOMA) to support the users. Furthermore, the impact of the channel gain difference (CGD) between the users paired at the MWBS tier is investigated in detail. The numerical results show that offloading to MWBS achieves significant improvement in the outage probability of the offloaded user. In addition, offloading to MWBS tier also improves the outage performance at the UHBS tier. Besides, it is observed that the CGD between the paired users at the MWBS tier plays a vital role in the outage performance of the offloaded user. The analytical results are verified using Monte Carlo simulations.
Spectral efficiency and deployment cost efficiency analysis of mmW/UHF-based cellular network Mukesh Kumar Mishra, Aditya Trivedi IEEE Transactions on Vehicular Technology, 2019 Next-generation heterogeneous cellular network (HCN) expects more and more deployment of the base stations and spectrum to achieve data rate in gigabits per second with seamless connectivity. Recently, small cell deployment has proven its effectiveness for increasing the coverage and area spectral efficiency (ASE) of the cellular network. Although, dense small cell deployment also increases the deployment cost and cross-tier interference of the network. This paper suggests switching-based mixed millimeter wave (mmW)/ultra high frequency (UHF) cellular network as a possible solution to overcome these challenges. In mixed mmW/UHF cellular network (named as MMUCN), mmW is used as the main transmission link, and UHF band is utilized as a backup link. In this paper, a theoretical framework is developed using tools from the stochastic geometry to analyze the outage performance, ASE, and deployment cost efficiency (DCE) of the MMUCN, which comprises existing macro base stations and mmW base stations. Optimal mmW base station densities constraints by the outage are calculated, which maximizes the ASE and DCE. Furthermore, a multiobjective optimization problem is formulated to maximize ASE and DCE simultaneously. Numerical results show that MMUCN outperforms UHF-based two-tier cellular network and efficiently mitigates the cross-tier interference of the system.
Analysis of downlink power control and cooperation scheme for two-tier heterogeneous cellular network Pragya Swami, Mukesh Kumar Mishra, Aditya Trivedi International Journal of Communication Systems, 2017 SummaryThe traditional cellular network cannot keep pace with the dramatic growth in data traffic due to exponentially increasing number of multimedia applications and mobile subscribers. Recently, femto base stations (FBSs) are deployed with the macro base station (MBS) tier for off‐loading the data traffic and to improve the indoor coverage of the heterogeneous cellular network. However, FBS deployment also increases the cross‐tier interference of the heterogeneous cellular network resulting in outage performance degradation of MBS tier. This work develops an analytical framework to limit the cross‐tier interference of MBS tier using power control scheme (PCS). The proposed PCS works on path loss inversion and location‐based power level rule for FBS. Moreover, a cooperation scheme and an association policy with MBS (CSAPM) are introduced to improve the outage performance of the FBS tier. Tools from the stochastic geometry are used for deriving the signal to interference and noise ratio outage probability, total outage probability, and area spectral efficiency (ASE) of MBS tier and FBS tier. Additionally, ASE maximization problem is formulated to evaluate the optimal density of FBSs. The effectiveness of the proposed PCS and CSAPM on outage performance and ASE are numerically demonstrated. It is noted from the results that the proposed CSAPM can compensate the loss in outage performance of FBS tier due to PCS. Finally, simulation results validate the analytical results.
Performance analysis of two-tier cellular network using power control and cooperation Pragya Swami, Mukesh Kumar Mishra, Aditya Trivedi 2016 International Conference on Advances in Computing Communications and Informatics Icacci 2016, 2016 Femtocell deployment improves the data rate and indoor coverage of the heterogeneous cellular network (HCN). However, it also increases the cross-tier interference of the system which results in performance degradation of the macro base station (MBS) tier. In this work, a mathematical framework is developed to mitigate the cross-tier interference of MBS tier using a power control scheme (PCS). This PCS works on path loss inversion and location-based power level rule for femto base stations (FBS) to improve the coverage of the MBS tier. Furthermore, a cooperation scheme and association policy are proposed to improve the performance of the FBS tier. Stochastic geometry is considered for deriving the signal to interference and noise ratio (SINR) outage probability, total outage probability, and area spectral efficiency (ASE) for MBS and FBS tiers. The impact of the PCS, proposed cooperation scheme with association policy on outage probability, and ASE are numerically evaluated. Numerical results show that considerable improvement in outage performance of MBS tier is obtained using proposed PCS. Moreover, applying PCS results in degradation of outage performance of FBS tier. This loss in performance can be compensated by using the proposed cooperation scheme and association policy.
Performance analysis of two tier cognitive heterogeneous cellular network Mukesh Kumar Mishra, Aditya Trivedi 2015 21st National Conference on Communications Ncc 2015, 2015 Next generation cellular network is expected to overcome the issues like demand for high data rates, better network coverage, energy, and spectrally efficient system. In this paper, femto based heterogeneous cellular network (HCN) with cognitive approach is considered to address these issues. This paper investigates two tier cognitive based HCN for overlay, underlay, and mixed overlay-underlay spectrum sharing schemes (SSSs). Macro base station (MBS) and cognitive femto base station (CFBS) are considered as a primary user network (PUN) and cognitive user network (CUN), respectively. Outage probability is a fundamental performance measure in HCN design. In this work, stochastic geometry is used for deriving the probability density function (pdf) of the signal-to-interference ratio (SIR) and the outage probability of the HCN for different SSSs. Furthermore, energy efficiency (EE) of the HCN and single tier network (MBS only) are also calculated for different SSSs. Numerical results show that outage performance of HCN in mixed overlay-underlay scheme outperforms other schemes. Moreover, it is observed that the effect of BSs density on outage probability is lower for the CFBSs as compared to MBSs.
NOMA-Enabled UAV Trajectory Optimization Using Deep Reinforcement Learning for Efficient IoT Data Collection CK Bulusu, P Swami, M Pattanaik, MK Mishra, T Ratnarajah IEEE Access 14, 48212-48221 , 2026 2026
Performance analysis of sub-6 GHz/mmWave NOMA hybrid-HetNets using partial CSI P Swami, MK Mishra, V Bhatia, T Ratnarajah, A Trivedi IEEE Transactions on Vehicular Technology 71 (12), 12958-12971 , 2022 2022 Citations: 17
mmWave-Based 5G and Beyond Cellular Networks M Kumar Mishra, A Trivedi, N Mehra 5G and Beyond Wireless Systems: PHY Layer Perspective, 129-153 , 2020 2020 Citations: 1
Outage probability of ultra high frequency and millimeter wave based HetNets with NOMA P Swami, MK Mishra, V Bhatia, T Ratnarajah 2019 16th International Symposium on Wireless Communication Systems (ISWCS … , 2019 2019 Citations: 4
Outage and ASE analyses for power controlled D2D communication P Pawar, A Trivedi, MK Mishra IEEE Systems Journal 14 (2), 2269-2280 , 2019 2019 Citations: 18
Spectral efficiency and deployment cost efficiency analysis of mmW/UHF-based cellular network MK Mishra, A Trivedi IEEE Transactions on Vehicular Technology 68 (7), 6565-6577 , 2019 2019 Citations: 13
Outage and energy efficiency analysis for cognitive based heterogeneous cellular networks MK Mishra, A Trivedi, KK Pattanaik Wireless Networks 24 (3), 847-865 , 2018 2018 Citations: 8
An Analytical Model for LoS Probability and Area Transport Efficiency of Millimeter Wave Cellular Network MK Mishra, A Trivedi, KK Pattanaik Wireless Personal Communications 97 (2), 2383-2398 , 2017 2017
Analysis of downlink power control and cooperation scheme for two‐tier heterogeneous cellular network P Swami, MK Mishra, A Trivedi International Journal of Communication Systems 30 (13), e3282 , 2017 2017 Citations: 6
Performance analysis of two-tier cellular network using power control and cooperation P Swami, MK Mishra, A Trivedi 2016 International Conference on Advances in Computing, Communications and … , 2016 2016 Citations: 6
Performance analysis of two tier cognitive heterogeneous cellular network MK Mishra, A Trivedi 2015 Twenty First National Conference on Communications (NCC), 1-6 , 2015 2015 Citations: 5
Analytical outage performance of cognitive small cell network MK Mishra, A Trivedi 2014 IEEE Online Conference on Green Communications (OnlineGreencomm), 1-6 , 2014 2014 Citations: 1
Analytical outage performance of uplink distributed green antenna system MK Mishra, P Aggarwal, A Trivedi, KK Pattanaik 2014 Eleventh International Conference on Wireless and Optical … , 2014 2014
Efficient BER analysis of OFDM system over Nakagami-m fading channel MK Mishra, N Sood, AK Sharma International Journal of Advanced Science and Technology 37, 37-46 , 2011 2011 Citations: 22
SER analysis of OFDM system over rayleigh fading channel MK Mishra, N Sood International Journal of Computer Applications 975, 8887 , 2011 2011 Citations: 5
BER Performance of OFDM-BPSK System over Nakagami Fading Channels MK Mishra, N Sood, AK Sharma International Journal of Computer Applications (IJCA) 17 (8), 1-3 , 2011 2011 Citations: 4
Error rate performance analysis of OFDM system over Nakagami-n and Nakagami-q distributions MK Mishra, HS Ajal, R Kumar Proceedings of the innovative conference on embedded systems, mobile … , 2011 2011 Citations: 1
Analytical Error Rate Performance Evaluation of OFDM-QPSK System over Nakagami Distribution MK Mishra International Journal of Computer Applications 975, 8887 , 2011 2011
Efficient BER analysis of OFDM system over Nakagami-m fading channel MK Mishra, N Sood, AK Sharma International Journal of Advanced Science and Technology 37, 37-46 , 2011 2011 Citations: 22
Outage and ASE analyses for power controlled D2D communication P Pawar, A Trivedi, MK Mishra IEEE Systems Journal 14 (2), 2269-2280 , 2019 2019 Citations: 18
Performance analysis of sub-6 GHz/mmWave NOMA hybrid-HetNets using partial CSI P Swami, MK Mishra, V Bhatia, T Ratnarajah, A Trivedi IEEE Transactions on Vehicular Technology 71 (12), 12958-12971 , 2022 2022 Citations: 17
Spectral efficiency and deployment cost efficiency analysis of mmW/UHF-based cellular network MK Mishra, A Trivedi IEEE Transactions on Vehicular Technology 68 (7), 6565-6577 , 2019 2019 Citations: 13
Outage and energy efficiency analysis for cognitive based heterogeneous cellular networks MK Mishra, A Trivedi, KK Pattanaik Wireless Networks 24 (3), 847-865 , 2018 2018 Citations: 8
Analysis of downlink power control and cooperation scheme for two‐tier heterogeneous cellular network P Swami, MK Mishra, A Trivedi International Journal of Communication Systems 30 (13), e3282 , 2017 2017 Citations: 6
Performance analysis of two-tier cellular network using power control and cooperation P Swami, MK Mishra, A Trivedi 2016 International Conference on Advances in Computing, Communications and … , 2016 2016 Citations: 6
Performance analysis of two tier cognitive heterogeneous cellular network MK Mishra, A Trivedi 2015 Twenty First National Conference on Communications (NCC), 1-6 , 2015 2015 Citations: 5
SER analysis of OFDM system over rayleigh fading channel MK Mishra, N Sood International Journal of Computer Applications 975, 8887 , 2011 2011 Citations: 5
BER Performance of OFDM-BPSK over Nakagami Fading Channels MK Mishra, N Sood, AK Sharma International Journal of Computer Applications 975, 8887 , 2011 2011 Citations: 5
Outage probability of ultra high frequency and millimeter wave based HetNets with NOMA P Swami, MK Mishra, V Bhatia, T Ratnarajah 2019 16th International Symposium on Wireless Communication Systems (ISWCS … , 2019 2019 Citations: 4
BER Performance of OFDM-BPSK System over Nakagami Fading Channels MK Mishra, N Sood, AK Sharma International Journal of Computer Applications (IJCA) 17 (8), 1-3 , 2011 2011 Citations: 4
mmWave-Based 5G and Beyond Cellular Networks M Kumar Mishra, A Trivedi, N Mehra 5G and Beyond Wireless Systems: PHY Layer Perspective, 129-153 , 2020 2020 Citations: 1
Analytical outage performance of cognitive small cell network MK Mishra, A Trivedi 2014 IEEE Online Conference on Green Communications (OnlineGreencomm), 1-6 , 2014 2014 Citations: 1
Error rate performance analysis of OFDM system over Nakagami-n and Nakagami-q distributions MK Mishra, HS Ajal, R Kumar Proceedings of the innovative conference on embedded systems, mobile … , 2011 2011 Citations: 1
NOMA-Enabled UAV Trajectory Optimization Using Deep Reinforcement Learning for Efficient IoT Data Collection CK Bulusu, P Swami, M Pattanaik, MK Mishra, T Ratnarajah IEEE Access 14, 48212-48221 , 2026 2026
An Analytical Model for LoS Probability and Area Transport Efficiency of Millimeter Wave Cellular Network MK Mishra, A Trivedi, KK Pattanaik Wireless Personal Communications 97 (2), 2383-2398 , 2017 2017
Analytical outage performance of uplink distributed green antenna system MK Mishra, P Aggarwal, A Trivedi, KK Pattanaik 2014 Eleventh International Conference on Wireless and Optical … , 2014 2014
