Precoding design for of DMA uplink antenna selection system

Juinn-Horng Deng, Yuh-Cherng Jang
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引用次数: 1

Abstract

In this study, an antenna selection method is studied in a precoding OFDMA uplink system for the upcoming 4G cellular era. Candidates for 4G system include WiMAX 2.0 and 3GPP L TE-Advanced. This study specifically addresses the situation that the receiver possesses limited RF modules. The common carrier frequency offset (CFO) problem is considered, which brings along the problems of inter carrier interference (ICI) and multiple access interference (MAI). This study proposes a novel method to effectively eliminate annoying MAl in a multiuser uplink system by using the R matrix, which comes after applying QR dirty paper coding (QR-DPC) to the equivalent channel response matrices. Moreover, the R matrix helps to select antenna. The BER performance of the proposed method is better than the well known Shannon-Hartley theorem.
DMA上行天线选择系统的预编码设计
本研究针对即将到来的4G蜂窝时代,研究了一种预编码OFDMA上行系统中的天线选择方法。候选的4G系统包括WiMAX 2.0和3GPP L TE-Advanced。本研究特别针对接收器拥有有限射频模块的情况。考虑了共载波频偏问题,由此带来了载波间干扰(ICI)和多址干扰(MAI)。本文提出了一种将QR脏纸编码(QR- dpc)应用于等效信道响应矩阵后,利用R矩阵有效消除多用户上行系统中恼人的MAl的新方法。此外,R矩阵有助于天线的选择。该方法的误码率优于著名的香农-哈特利定理。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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