Diversity gains and clustering in wireless relaying

Date

2004-01-01

Author

Yüksel Turgut, Ayşe Melda
Erkip, E

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We consider a wireless system consisting of one source, one destination and M relays. Assuming path loss and Rayleigh fading, we use the cutset upper bound to show that no matter where the relays are located, the maximum diversity one can obtain is M + 1. However, one can achieve a higher diversity gain, namely [(M+2/2)(2)], if [M/2] of the relays are clustered with the source and [M] with the destination. This result utilizes the observation that if two wireless nodes are very close, Rayleigh assumption breaks and the proper channel model is additive white Gaussian noise (AWGN). Hence to realize a virtual multi-input multi-output (MIMO) system, clustering is essential.

URI

https://hdl.handle.net/11511/96463

Conference Name

IEEE International Symposium on Information Theory

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Department of Electrical and Electronics Engineering, Conference / Seminar

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Citation Formats

A. M. Yüksel Turgut and E. Erkip, “Diversity gains and clustering in wireless relaying,” presented at the IEEE International Symposium on Information Theory, Illinois, Amerika Birleşik Devletleri, 2004, Accessed: 00, 2022. [Online]. Available: https://hdl.handle.net/11511/96463.