Resource Allocation for Dual-Hop OFDM Systems with Multiple Decode-and-Forward Relays

In this paper, we consider the optimal resource allocation problem for dual-hop systems with a source-destination pair and multiple decode-and-forward (DF) relays. Orthogonal frequency division multiplexing (OFDM) is adopted in both hops. To maximize the system capacity, we formulate a mixed binary...

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Vydáno v:2009 IEEE 70th Vehicular Technology Conference Fall s. 1 - 5
Hlavní autoři: Yicheng Lin, Wenbo Wang, Bin Fan, Lin Huang, Kan Zheng
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.09.2009
Témata:
Decoding
Fading
Heuristic algorithms
Linear programming
OFDM
Power system relaying
Relays
Resource management
Signal processing algorithms
Wireless communication
ISBN:142442514X, 9781424425143
ISSN:1090-3038
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Popis
Shrnutí:In this paper, we consider the optimal resource allocation problem for dual-hop systems with a source-destination pair and multiple decode-and-forward (DF) relays. Orthogonal frequency division multiplexing (OFDM) is adopted in both hops. To maximize the system capacity, we formulate a mixed binary integer programming problem to optimally allocate the subchannels and transmit power for both the source and the relay nodes. Because of the prohibitive complexity, a greedy heuristic algorithm is proposed to decompose the original problem into solvable subproblems. Simulation results demonstrate that the proposed algorithm has a near-optimal performance.
ISBN:142442514X
9781424425143
ISSN:1090-3038
DOI:10.1109/VETECF.2009.5378859