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A low complex joint QR based partial ML detection and spatial interference cancellation scheme for coded double STBC-OFDM system

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3 Author(s)

In this paper, we propose a low complexity MIMO detection method for double space-time block (D-STBC) coded OFDM system. The proposed MIMO detector involves two step decoding process to efficiently de-correlate spatially-multiplexed / space-time-coded signals. The proposed MIMO detector collects feedback information from interfering spatial domain. Then, interference cancellation is applied once to reduce latency. A unique QR decomposition with partial maximum likelihood detection scheme is developed to lower computational complexity while performance is significantly improved. From computer simulation results, our scheme in D-STBC OFDM system outperforms previously proposed iterative detectors based on turbo equalization principle.

Published in:

Personal, Indoor and Mobile Radio Communications, 2008. PIMRC 2008. IEEE 19th International Symposium on

Date of Conference:

15-18 Sept. 2008