ASIC implementation comparison of SIC and LSD receivers for MIMO-OFDM

MIMO-OFDM receivers with horizontal encoding are considered in this paper. The successive interference cancellation (SIC) algorithm is compared to the K-best list sphere detector (LSD). A modification to the K-best LSD algorithm is introduced. The SIC and K-best LSD receivers are designed for a 2 ti...

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Bibliographic Details
Main Authors: Ketonen, J., Myllyla, M., Juntti, M., Cavallaro, J.R.
Format: Conference Proceeding
Language:English
Subjects:
Amplitude modulation
Application specific integrated circuits
Delay
Detectors
Interference cancellation
MIMO
Quadrature amplitude modulation
Receiving antennas
Silicon carbide
Throughput
Online Access:Request full text
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Summary:MIMO-OFDM receivers with horizontal encoding are considered in this paper. The successive interference cancellation (SIC) algorithm is compared to the K-best list sphere detector (LSD). A modification to the K-best LSD algorithm is introduced. The SIC and K-best LSD receivers are designed for a 2 times 2 antenna system with 64-quadrature amplitude modulation (QAM). The ASIC implementation results for both architectures are presented. The K-best LSD outperforms the SIC receiver in bad channel conditions but the SIC receiver performs better in channels with less correlated MIMO streams. The latency of the K-best LSD is large due to the high modulation order and list size. The throughput of the SIC receiver is more than 6 times higher than that of the K-best LSD.
ISSN:1058-6393
2576-2303
DOI:10.1109/ACSSC.2008.5074755