Performance of iterative multiuser detection with a partial PIC detector and serially concatenated codes

An iterative multiuser detection scheme is proposed for DS-CDMA system. An iterative multiuser detection has a partial parallel interference cancellation (PIC) detector and serially concatenated codes. Taking the expectation value of a coded bit the partial PIC detector produces a metric, which becomes an input to the decoders. It is shown that the proposed iterative multiuser detector has near single user performance as As a channel coding scheme, turbo codes have been studied to increases their coding gain [7]. Turbo codes achieve BER performance within 0.7 dB of the Shannon Limit. As a turbo code, a serially concatenated convolutional code(SCCC) has a higher coding gain than a parallel concatenate convolutional code(PCCC) for high signal-to-noise ratio (SNR) [9]. In this paper an iterative multiuser detection scheme MAI is effectively cancelled out and a is obtained.