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Asynchronous block‐based minimum mean square error (B‐MMSE) CDMA multi‐user detection
Author(s) -
Chen HsiaoHwa,
Liu ZhiQiang
Publication year - 1998
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/(sici)1099-1131(199811/12)11:6<395::aid-dac381>3.0.co;2-y
Subject(s) - detector , minimum mean square error , asynchronous communication , computer science , block (permutation group theory) , code division multiple access , algorithm , multiuser detection , decorrelation , mathematics , telecommunications , statistics , combinatorics , estimator
Abstract This paper introduces a novel asynchronous CDMA multi‐user detector, the block‐based MMSE (B‐MMSE) multi‐user detector, in which the data stream is segmented into blocks by inserting zero bits and detection takes place block‐by‐block without compromising the MMSE detection efficiency. The BER performance of the B‐MMSE detector is studied and the results are compared with those of the decorrelating detector. It is shown that the B‐MMSE detector offers promising detection efficiency at a much lower implementation complexity, which is linear in the product of number of users and block size, than that of the traditional MMSE detector. © 1998 John Wiley & Sons, Ltd.