Large-Scale Cooperative Relaying Network with Optimal Coherent Combining under Aggregate Relay Power Constraints
2004 (English)In: WWRF: New Air Interfaces, Relay based Systems and Smart Antennas, 2004Conference paper (Other academic)
Communication schemes exploiting cooperating relay nodes can enable significant SNR and diversity order enhancements. In this paper, a communicating pair of nodes with support from an arbitrary number of relay nodes cooperating in parallel is considered, and the optimal weighting parameters for coherent combining based non-regenerative relaying are derived under aggregate relay power constraint. The analysis demonstrates that each relay merely requires multiplying the received signal with an individual phase and amplitude factor and a common amplitude normalization factor. It is illustrated that the resulting SNR is substantially enhanced compared to direct communication and that SNR improves with increasing relay station density.
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IdentifiersURN: urn:nbn:se:kth:diva-67474OAI: oai:DiVA.org:kth-67474DiVA: diva2:484999
Qc 201202032012-02-032012-01-272012-02-03Bibliographically approved