COOPERATIVE MODE BETWEEN MIMO AND BEAMFORMING SCHEMES IN WLANS
Abstract
The multiple- input multiple- output (MIMO) and beamforming (BFM) techniques have become key techniques of wireless communications systems and are regarded as having significant roles in the development of single-user communication and multiuser communication performance. This paper shows their different advantages and disadvantages in terms of the data transmission rate and signal to noise ratio (SNR). The MIMO technique is the use of multiple antennas at both the transmitter and receiver to improve the performance of the data transmission rate while BFM increases the SNR performance. To fully deploy those advantages, we propose the integration of the MIMO and BFM techniques to improve the data transmission rate and SNR, the so- called cooperative mode. Furthermore, the proposed cooperative mode can improve the average throughput for both single-user and multi-user communications. The obtained simulation results reveal that the proposed concept provides a higher average throughput over both the MIMO and BFM techniques.
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