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QRD-Based Precoded MIMO-OFDM Systems with Reduced Feedback
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DOI：10.1109/TCOMM.2010.02.080339.png)
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摘要
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QR decomposition (QRD)-based precoded MIMO-OFDM systems with reduced feedback are proposed to convert the MIMO-OFDM channel into layered subchannels. QRD-M is further combined with either singular value (SVD) or geometric mean decomposition (GMD) of the time-domain channel impulse response matrix. As a result, the receiver in the proposed systems only needs to feed back information describing one precoding matrix for all carriers. Simulation results confirm the bit-error-rate (BER) and throughput performance superiority of the proposed systems compared to conventional SVD per-carrier precoding schemes.
Keyword:
Orthogonal frequency division multiplexing (OFDM)
multiple-input multiple-output (MIMO)
geometric mean decomposition (GMD)
QR decomposition (QRD)
reduced-feedback precoding
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8.3
论文数:
1.2W
被引数:
3.6W
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