Adaptive MC-CDMA Receiver with Constrained Constant Modulus IQRD-RLS Algorithm for MAI Suppression
學年 92
學期 1
出版(發表)日期 2003-10-01
作品名稱 Adaptive MC-CDMA Receiver with Constrained Constant Modulus IQRD-RLS Algorithm for MAI Suppression
作品名稱(其他語言)
著者 陳巽璋; Chang, C.Y.
單位 淡江大學電機工程學系
出版者
著錄名稱、卷期、頁數 Signal Processing, Elsevier Pbl. 80(10), pp.2209-2226
摘要 The multicarrier code division multiple access (MC-CDMA) technique is considered to be one of the attractive candidates to achieve high data-rate for future wireless communication systems. In this paper, based on linearly constrained constant modulus (LCCM) least square (LS) criterion, a new robust adaptive constrained filtering algorithm, referred to as the LCCM inverse QRD-RLS (IQRD-RLS) algorithm, is devised for MC-CDMA detector. The proposed robust LCCM IQRD-RLS algorithm can be used to estimate the weights of the combining process to combat the multiple access interference (MAI), effectively, and is more robust to against the imperfect channel estimation error. By this approach we require only the knowledge of code sequences of desired user rather than the code sequences of other users. The superiority of the proposed algorithm for estimating the weights in the combining process is verified by evaluating the performance, in terms of output signal to interference and noise ratio (SINR) and bit error rate (BER). From computer simulation results we showed that it outperformed the conventional techniques, such as the maximum ratio combining (MRC), blind adaptation algorithm, least mean square algorithm with partitioned linear interference canceller structure (PLIC-LMS) and LCCM-gradient based approaches.
關鍵字 Multicarrier; Linearly constrained constant modulus; Inverse QRD-RLS algorithm; Mirror effect; Mismatch problem
語言 en
ISSN
期刊性質 國內
收錄於 SCI
產學合作
通訊作者
審稿制度
國別 TWN
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/60823 )

機構典藏連結