On the Capacity of the Broadband Relay Networks

نویسنده

  • Guoqing Li
چکیده

The paper studies the capacity of the OFDM and the OFDMA relay networks. Two relay schemes, amplify-and-forward (AF) relay and decode-and-forward (DF) relay are analyzed and compared for both OFDM and OFDMA relay networks. A relay node selection algorithm is proposed for OFDMA relay network. Numerical results show that under small relay power transmission, AF outperforms DF while the opposite is true when the relay transmission power is high. It is also shown that OFDM relay always outperforms OFDMA relay network, however as the number of relay nodes increases, the gap between the two decreases.

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تاریخ انتشار 2004