Spectrally efficient M-ary QAM based multi-antenna cooperative system over TWDP fading channel,Transactions on Emerging Telecommunications Technologies

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Spectrally efficient M-ary QAM based multi-antenna cooperative system over TWDP fading channel
Transactions on Emerging Telecommunications Technologies ( IF 2.5 ) Pub Date : 2021-05-10 , DOI: 10.1002/ett.4284
Rahul Makkar ₁ , Akshita Gupta ₂ , Divyang Rawal ₁ , Nikhil Sharma ₁

Affiliation

To cater the ever-increasing demand of wireless high-speed data access and mobile users, one of the potential enablers toward the sustainable improved network capacity is the network densification at different layers of the radio access system. In this article, a possible solution to achieve a spectrally efficient, ultradense network (UDN) for cellular communication is analyzed. In particular, the performance of the generalized M-ary quadrature amplitude modulation (M-QAM) scheme for multiantenna cooperative decode-and-forward (DF) system over two-wave with diffuse power (TWDP) fading is presented. The TWDP fading is evaluated using the moment generating function (MGF) based approach on spectral efficient QAM transmission. In this article, novel closed-form expressions for the exact average symbol error rate (ASER) for the generalized rectangular-QAM (R-QAM) and square-QAM (S-QAM) schemes are presented. The obtained expressions are in the form of Appell's and Laureicella's confluent hypergeometric function which can be evaluated mathematically either in the series or the integral-form. Further, the asymptotic analysis is also presented for the considered system to get better insights into the system. The analytical results derived are corroborated by simulations to validate the accuracy of the analysis.

中文翻译：

TWDP衰落信道上基于频谱高效M-ary QAM的多天线协作系统

为满足无线高速数据接入和移动用户不断增长的需求，实现可持续改进网络容量的潜在推动因素之一是无线接入系统不同层的网络密集化。在本文中，分析了实现蜂窝通信的频谱高效、超密集网络 (UDN) 的可能解决方案。特别地，介绍了用于具有扩散功率 (TWDP) 衰落的两波多天线协作解码和转发 (DF) 系统的广义 M 进制正交幅度调制 (M-QAM) 方案的性能。TWDP 衰落是使用基于频谱有效 QAM 传输的矩生成函数 (MGF) 的方法来评估的。在本文中，提出了广义矩形 QAM (R-QAM) 和方形 QAM (S-QAM) 方案的精确平均符号错误率 (ASER) 的新型封闭形式表达式。获得的表达式采用 Appell 和 Laureicella 合流超几何函数的形式，可以以级数或积分形式进行数学计算。此外，还为所考虑的系统提供了渐近分析，以更好地了解系统。得出的分析结果通过模拟得到证实，以验证分析的准确性。还为所考虑的系统提供了渐近分析，以更好地了解系统。得出的分析结果通过模拟得到证实，以验证分析的准确性。还为所考虑的系统提供了渐近分析，以更好地了解系统。得出的分析结果通过模拟得到证实，以验证分析的准确性。

更新日期：2021-05-10

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