Downlink Specific Linear Equalization for Frequency Selective CDMA Cellular Systems
Journal of VLSI Signal Processing Systems
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Generalized precoded block-spread CDMA
IEEE Transactions on Communications
IEEE Transactions on Communications
IEEE Transactions on Signal Processing
MMSE equalization of downlink CDMA channel utilizing unused orthogonal spreading sequences
IEEE Transactions on Signal Processing
Successive interference cancellation algorithms for downlink W-CDMA communications
IEEE Transactions on Wireless Communications
Chip-interleaved block-spread CDMA versus DS-CDMA for cellular downlink: a comparative study
IEEE Transactions on Wireless Communications
Receivers with chip-level decision feedback equalizer for CDMA downlink channels
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
MIMO Block Spread CDMA Systems for Broadband Wireless Communications
IEEE Transactions on Wireless Communications
Performance of the decorrelating multiuser detector in a correlated fading environment
IEEE Transactions on Wireless Communications - Part 1
Integrated circuits for channel coding in 3G cellular mobile wireless systems
IEEE Communications Magazine
A generalized RAKE receiver for interference suppression
IEEE Journal on Selected Areas in Communications
Iterative turbo decoder analysis based on density evolution
IEEE Journal on Selected Areas in Communications
Evolution analysis of low-cost iterative equalization in coded linear systems with cyclic prefixes
IEEE Journal on Selected Areas in Communications
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Convolutional spreading CDMA with cyclic prefix (CS-CDMA/CP) enables multiuser interference-free (MUI-free) transmission over multipath downlink channels with the use of zero correlation zone (ZCZ) codes. However, MUI-free transmission is guaranteed only when the data length D, channel delay L, and ZCZ length Z satisfy Z + 1 ≥ D + L. In this paper, we consider the situation that MUI-free transmission is not realized inevitably becanse of excessive multipath delays or deliberately because of the necessity to get a higher bandwidth efficiency, clarify the structure of MUI in the CS-CDMA/CP system employing M-ZCZ codes, and propose iterative partial multiuser detection (IPMUD). The detection is implemented at symbol-level (after despreading) and the number of users jointly considered can be adjusted flexibly to offer a tradeoff between system performance and receiver complexity. The performance of the proposed scheme is verified numerically by density evolution approach and BER simulations. The CS-CDMA/CP system with IPMUD is shown to be much less complex than the DS-CDMA system with Wang and Poor's turbo MUD receiver and to be less complex and better, in terms of bit error rate (BER) performance, than the DS-CDMA system with iterative chip-wise equalization receivers.