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Transmission technique selector for radio communication systems with multiple transmit and multiple receive antennas

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TLDR
In this paper, a radio communications device that has multiple receive antennas processes received data communications signals to select between space time coding and spatial multiplexing as a selected transmission technique from a base device ( 104 ) that had multiple transmit antennas.
Abstract
A radio communications device ( 102 ) that has multiple receive antennas processes received data communications signals to select between space time coding and spatial multiplexing as a selected transmission technique from a base device ( 104 ) that has multiple transmit antennas. A channel throughput ( 402 - 412, 450 - 454 ) for each transmission technique is estimated based on signal to interference and noise ratios ( 502 - 512, 550 - 554 ) of signals being transmitted through a MIMO channel ( 140 ) as measured by a receiver ( 708 ). The transmission technique with the higher estimated throughput is determined. If spatial multiplexing is determined to have the higher estimated throughput and the throughput of each layer of the spatially multiplexed signal is greater than a threshold, spatial multiplexing is selected. Otherwise, space time coding is selected.

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Citations
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References
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Patent

Adaptive transmission and receiving method and device in wireless communication system with multiple antennas

TL;DR: In this paper, an adaptive transmit and receive method and device in a multiple-antenna wireless communication system is described, where a transmitter calculates an STBC performance parameter and a SM performance parameter, and uses the parameters to determine a main transmit mode with maximum data rates and select a sub-transmit mode for minimizing power consumption.
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