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Downlink Power Allocation for Relay Frequency Reuse  

Oh, Chang-Yoon (Inha Technical College, Information & Communications Department)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.49, no.6, 2012 , pp. 98-104 More about this Journal
Abstract
We consider the optimum power allocation problem for downlink system throughput maximization in a 2 time slotted relay interference channel. Base station (BS) transmits power to Mobile Station (MS) and Relay Station (RS) in time slot 1 (orthogonal channel). In time slot 2, BS and RS transmit power to each MS, while causing cochannel interference to each other. The obtained optimum power allocation scheme allows simultaneous transmissions of BS and RS when the interference level in time slot 2 is low. However, when the interference level is high, RS shuts down its power. Numerical results are provided to support our analysis.
Keywords
Relay; Interference Channel; Power Allocation; Frequency Reuse;
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  • Reference
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