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Approximate Minimum BER Power Allocation of MIMO Spatial Multiplexing Relay Systems
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 Title & Authors
Approximate Minimum BER Power Allocation of MIMO Spatial Multiplexing Relay Systems
Hwang, Kyu-Ho; Choi, Soo-Yong;
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In this paper, a multiple-input and multiple-output (MIMO) spatial multiplexing (SM) relay system is studied in a bit error rate (BER) sense, where every node is deployed with multiple antennas. In order to efficiently use the limited power resource, it is essential to optimally allocate the power to nodes and antennas. In this context, the power allocation (PA) algorithm based on minimum BER (MBER) for a MIMO SM relay system is proposed, which is derived by direct minimization of the average BER, and divided into inter-node and inter-antenna PA algorithm. The proposed scheme outperforms the conventional equal power allocation (EPA) algorithm without extra power consumption.
MIMO;Relay;Minimum BER;Power Allocation;Spatial Multiplexing;
 Cited by
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