BER Performance of a Hierarchical APSK UEP System over Nakagami-m fading

被引：6

作者：

Quazi, T. ^{[1
]}

Xu, H. ^{[1
]}

机构：

[1] Univ KwaZulu Natal, Dept Elect Elect & Comp Engn, Sch Engn, King George V Ave, ZA-4041 Durban, South Africa

来源：

SAIEE AFRICA RESEARCH JOURNAL | 2016年 / 107卷 / 04期

关键词：

Hierarchical modulation; unequal error protection; multimedia transmission;

D O I：

10.23919/SAIEE.2016.8532258

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：

Bit error rate (BER) performance studies of amplitude phase shift keying (APSK) have not looked at the unequal error protection (UEP) facility provided by such a modulation scheme. In this paper hierarchical 16-APSK is studied using a bit allocation mechanism that allows for UEP for two classes of multimedia traffic. Theoretical BER expressions are derived for two UEP bit streams using the nearest neighbourhood method in additive white Gaussian noise (AWGN) and Nakagami-m fading channels. Simulation results are then used to validate the accuracy of the theoretical expressions. A low complexity maximum likelihood (ML) detection for hierarchical 16-APSK is also proposed and simulation results show that the proposed low complexity ML detector achieves the same BER performance as the optimum ML detector.

引用

页码：230 / 236

页数：7

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