Noncoherent Diagonal Distributed Space-Time Block Codes for Amplify-And-Forward Half-Duplex Cooperative Relay Channels

被引：7

作者：

Ma, Shuang ^{[1
]}

Zhang, Jian-Kang ^{[2
]}

机构：

[1] Univ Jinan, Sch Informat Sci & Engn, Jinan 250022, Peoples R China

[2] McMaster Univ, Dept Elect & Comp Engn, Hamilton, ON L8S 4L8, Canada

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2011年 / 60卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

Amplify-and-forward (AF) half-duplex protocol; blind unique identification; diagonal distributed space-time block codes; full noncoherent diversity; least square error (LSE) detection; WIRELESS NETWORKS; ERROR-PROBABILITY; DIVERSITY; COMMUNICATION; PERFORMANCE; PROTOCOLS; PRECODER; COHERENT; SYSTEM;

D O I：

10.1109/TVT.2011.2142332

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：

In this paper, we consider a noncoherent amplify-andforward (AF) half-duplex cooperative relay system, where the channel gains are completely unknown at the destination. For such a system, the currently available design of noncoherent unitary space-time block codes for the multiple-input-multiple-output (MIMO) systems cannot be applied because of the signal matrix having a certain triangular structure. In this paper, we propose the design of full-diversity nonunitary and unitary diagonal distributed space-time block codes for the noncoherent AF half-duplex protocol. We prove that both the nonunitary and unitary codes enable the unique identification of the channel and transmitted signals in the noise-free case for any given nonzero received signals, as well as full noncoherent diversity in the noise case for the least square error (LSE) receiver. Computer simulations show that our unitary code obtains about 5-dB signal-to-noise-ratio (SNR) gains at the symbol error rate of 10(-5) over the precoded training scheme and the differential coding scheme.

引用

页码：2400 / 2405

页数：7

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