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Nonlinear Multiuser Precoding for Downlink DS-CDMA Systems Over Multipath Fading Channels

Overview This paper proposes a Transmitter (Tx)-based nonlinear decorrelating interference cancellation method, Tomlinson-Harashima precoding (THP), to combat multiple access interference (MAI) for the downlink of Direct Sequence Code Division Multiple Access (DS-CDMA) systems in multipath fading channels. Since diversity combining and MAI cancellation are employed in the transmitter, the mobile user receivers remain as simple as in single-path single user channels. Two THP designs, PreRakeTHP and Multipath Decorrelating THP (MDTHP), are derived and compared with previously investigated decorrelating techniques.

Further White Paper Details
Publisher	North Carolina State University	File Format	PDF
Date Published	August 2004
Format	White Papers
Topics	N/A

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