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Spatial multiplexing have drawn a lot of attention for many years due to their great potential to achieve high throughput of MIMO systems implemented in wireless communication systems. It is well known that in a single user case the capacity scales linearly with the minimum number of transmit and receive antennas. Many linear precoding techniques require each antenna to transmit its own data. In this...
Cooperative diversity techniques have emerged as promising solutions to combat the deleterious effects caused by multipath fading. The main advantage of this technique is that the diversity gain can be achieved without installing multiple antennas at the transmitter or the receiver. In this paper, we study the ergodic capacity performance of cooperative communication systems with decode-and-forward...
In this paper, cross-layer combining of an adaptive modulation-coding (AMC) scheme at the physical layer and the use of automatic repeat request (ARQ) retransmissions at the medium access control (MAC) layer is integrated into the design of scheduling for multi-user wireless networks. A class of scheduling algorithms capable of jointly collecting retransmission diversity and multi-user diversity are...
A cross-layer optimization combining retransmission diversity with multi-user diversity is investigated for wireless communications. To this end, a joint design of adaptive modulation and coding with retransmission-based automatic repeat request protocol is first outlined. This design is then employed to devise multi-user scheduling schemes which can optimally capture the available multiuser and retransmission...
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