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- W2583002887 abstract "The design of spectrally efficient and robust schemes is vital to overcome the harsh wireless environment when delivering high data rate services. In the present paper, the performance of a constant power-discrete rate adaptation scheme is evaluated in a multiple antenna scenario. Such technique has low complexity, and needs a low rate feedback channel to adapt transmission rate. However, the feedback can become outdated when the channel is changing rapidly. To compensate the error in feedback, we propose a new switching thresholds for the rate adaptive system coupled with a multi-antenna MRC receiver. Closed form expressions are obtained for the Bit-ErrorRate (BER) performance of a rate adaptive system with an instantaneous BER constraint. On the basis of the analytical study, two types of switching thresholds are obtained, generic and updated. The latter takes into account the feedback error due to delay. We analyze the impact of feedback delay on the BER performance, when employing both generic and updated thresholds. Simulation results show that the proposed thresholds maintain the performance of the system when in presence of time-delayed feedback." @default.
- W2583002887 created "2017-02-03" @default.
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- W2583002887 date "2006-01-01" @default.
- W2583002887 modified "2023-09-25" @default.
- W2583002887 title "Switching Thresholds for Rate Adaptation with MRC under Feedback Delay" @default.
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