A Low Complexity Threshold Detector Making MLSD Decisions in a Multiuser Environment
نویسندگان
چکیده
In this paper we present a pipelined implementation of an iterative threshold detector, which makes the same decisions as a maximum likelihood sequence detector (MLSD) on some, but not necessarily all, bits. We apply this as a rst stage detector in a direct sequence code division multiple access (DS-CDMA) interferencelimited multiuser system. In combination with the singleuser matched lter (MF) detector we obtain improved performance and lower complexity than with the decorrelating receiver for a limited number of simultaneous users, up to 25 users with a spreading factor of 127.
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