Enhanced OFDM-NOMA for next generation wireless communication: A study of PAPR reduction and sensitivity to CFO and estimation errors

被引：55
作者：
Trivedi, Vinay Kumar [1 ]
Ramadan, K. [2 ]
Kumar, Preetam [1 ]
Dessouky, Moawad Ibrahim [3 ]
Abd El-Samie, Fathi E. [3 ]
机构：
[1] Indian Inst Technol Patna, Dept Elect Engn, Patna, Bihar, India
[2] Higher Inst Engn Al Shorouk City, Dept Elect & Elect Commun Engn, Cairo 11837, Egypt
[3] Menoufia Univ, Dept Elect & Elect Commun Engn, Fac Elect Engn, Menoufia 32952, Egypt
来源：
AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2019年 / 102卷
关键词：
5G; NOMA; OFDMA; SC-FDMA; PAPR; Pre-coding; Equalization; CFO compensation; AVERAGE POWER RATIO; NONORTHOGONAL MULTIPLE-ACCESS; HIGH-PERFORMANCE OFDM; HIGH-THROUGHPUT; SC-FDMA; UPLINK; EQUALIZATION; CANCELLATION; SCHEME;
D O I：
10.1016/j.aeue.2019.01.009
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Orthogonal Frequency Division Multiplexing (OFDM) based on Non-Orthogonal Multiple Access (NOMA) has been previously studied to fulfil the demands of high spectral efficiency, massive connectivity and resilience to frequency selectivity for the upcoming fifth generation (5G) wireless communication and beyond. NOMA enables spectrum overlapping and allows distinct users to simultaneously operate over the same frequency band, and thus enables massive connectivity. High Peak-to-Average Power Ratio (PAPR) and sensitivity to Carrier Frequency Offset (CFO) are significant demerits to deploy such a multi-carrier system for 5G and beyond applications. This paper studies the problem of high PAPR and the presence of CFO with efficient pre-coding techniques and a very simplified receiver design. An improved Minimum Mean Square Error (MMSE) receiver is proposed for low-complexity Joint Equalization and CFO Compensation (JECC) in frequency domain using Banded-Matrix Implementation (BMI). Moreover, we have investigated the sensitivity of different pre-coding techniques to channel and CFO estimation errors. (C) 2019 Elsevier GmbH. All rights reserved.
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收藏
页码：9 / 24
页数：16
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