HTRCI and Channel Ranking Based Joint Symbols Detection for MQRD-PCM/MIMO-OFDM |
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Authors: | Chang-Jun Ahn |
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Affiliation: | (1) 5488 Marvell Ln, Santa Clara, CA 95054, USA |
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Abstract: | MIMO-OFDM is considered a key technology in emerging high-data rate systems. In MIMO-OFDM systems, channel estimation and
signal detection are important to distinguish transmit signals from multiple transmit antennas. Previously, we have proposed
a parallel detection algorithm using multiple QR decompositions (Q is an orthogonal square matrix, R is upper triangular matrix) with permuted channel matrix (MQRD-PCM) to reduce the system complexity of MIMO-OFDM. This method
achieves a good BER performance with a low system complexity. However, since MQRD-PCM is a kind of parallel detection method,
the wrong detection probability is increased due to the bad channel signal-to-interference plus noise power ratio (SINR) of
the transmitted signals. As a result, the average BER performance is influenced by the wrong detection probability of the
bad channel SINR. To overcome the above-mentioned problems, in this paper, we propose the high time resolution carrier interferometry
and channel ranking based joint signal detection for MQRD-PCM/MIMO-OFDM. |
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Keywords: | |
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