Low-complexity iterative decoding for coded differential transmission

TitleLow-complexity iterative decoding for coded differential transmission
Publication TypeConference Paper
Year of Publication2003
AuthorsLampe, L., and R. Schober
Conference NameWireless Communications and Networking, 2003. WCNC 2003. 2003 IEEE
Pagination283 -288 vol.1
Date Publishedmar.
Keywordsantenna arrays, bit-error rate, channel state information, coded differential transmission, computational complexity, convolutional codes, decision-feedback assisted differential demodulators, demodulators, error statistics, Iterative Decoding, iterative receiver structure, low-complexity iterative decoding, multiple receive antennas, multiple transmit antennas, noncoherent transmission, power efficiency, Rayleigh channels, Rayleigh flat fading channels, receiving antennas, space-time codes, transmitting antennas

In this paper, a power-efficient low-complexity iterative receiver structure for noncoherent transmission over Rayleigh flat fading channels without channel state information (CSI) is presented. As the main contribution, several novel decision-feedback assisted differential demodulators are derived, which are well-suited implementation. Thereby, the general case of multiple transmit and multiple receive antennas is considered. We further provide analytical expressions for the achievable bit-error rate, which in good accordance with simulation results highlight the advantageous properties of the proposed receiver structure. Despite its simple components, the noncoherent iterative receiver without CSI can outperform a coherent scheme assuming perfect CSI.


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