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- W1569021749 abstract "In this paper, an adaptive modulation scheme for the multiple-input multiple-output (MIMO) frequency-selective channels is investigated. We consider a scenario with precoded block-based transceivers over spatially correlated Rayleigh multipath MIMO channels. To eliminate the inter-block interference, the zero-padding is used. The receiver is equipped with a MIMO minimum-mean-squared-error decision feedback equalizer. The precoder aims to force each subchannel to have an identical signal-to-interference-plus-noise ratio (SINR). To adjust the constellation size, the unbiased mean square error at the equalizer output is sent back to the transmitter. To simplify our analysis, the feedback channel is considered as instantaneous and error free. We first derive the probability density function of the overall SINR for flat fading and frequency-selective channels. On the basis of the probability density function of the upper bound of the SINR, we evaluate the system performance. We present accurate closed-form expressions of the average spectral efficiency, the average bit error rate and the outage probability. The derived expressions are compared with Monte Carlo simulation results. Furthermore, we analyze the effect of the channel spatial correlation. Copyright © 2013 John Wiley & Sons, Ltd." @default.
- W1569021749 created "2016-06-24" @default.
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- W1569021749 date "2013-04-01" @default.
- W1569021749 modified "2023-10-16" @default.
- W1569021749 title "Adaptive modulation and decision feedback equalization for frequency-selective MIMO channels" @default.
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- W1569021749 doi "https://doi.org/10.1002/dac.2544" @default.
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