Opportunistic cooperation with receiver-based ratio combining strategy

Qian Wang, Kui Ren, Yanchao Zhang, Bo Zhu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In cooperative wireless communication systems, many combining techniques could be employed at the receiver, such as maximal ratio combining (MRC), equal gain combining (EGC), etc. To address the effect of receiver diversity combining on optimum energy allocation, we analyze the problem of minimizing average total transmit energy under a SNR constraint when different ratio combining methods are utilized at destination. For maximal ratio combining (MRC), based on the explicit analytical solution an asymptotic solution for normalized optimum total energy in terms of μ and η was derived in the high-SNR scenario. For fixed ratio combining (FRC), we find that there does not exist an explicit analytical solution to the optimum energy allocation problem. However, the convexity proof for the energy function provides a way of using numerical convex optimization methods to find the unique solution. Our results also show that, while direct transmission (r* = 0) is optimum for certain channel states when the destination uses MRC, the relay should always transmit, i.e. r* > for all channel states, when the combining ratio β is a fixed number.

Original languageEnglish (US)
Title of host publicationLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Pages361-372
Number of pages12
Volume5258 LNCS
DOIs
StatePublished - 2008
Externally publishedYes
Event3rd International Conference on Wireless Algorithms, Systems, and Applications, WASA 2008 - Dallas, TX, United States
Duration: Oct 26 2008Oct 28 2008

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5258 LNCS
ISSN (Print)03029743
ISSN (Electronic)16113349

Other

Other3rd International Conference on Wireless Algorithms, Systems, and Applications, WASA 2008
CountryUnited States
CityDallas, TX
Period10/26/0810/28/08

Fingerprint

Convex optimization
Maximal Ratio Combining
Communication systems
Receiver
Energy
Analytical Solution
Cooperative Communication
Numerical Optimization
Asymptotic Solution
Convex Optimization
Energy Function
Wireless Communication
Unique Solution
Relay
Communication Systems
Optimization Methods
Convexity
Scenarios
Strategy

ASJC Scopus subject areas

  • Computer Science(all)
  • Theoretical Computer Science

Cite this

Wang, Q., Ren, K., Zhang, Y., & Zhu, B. (2008). Opportunistic cooperation with receiver-based ratio combining strategy. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 5258 LNCS, pp. 361-372). (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 5258 LNCS). https://doi.org/10.1007/978-3-540-88582-5-35

Opportunistic cooperation with receiver-based ratio combining strategy. / Wang, Qian; Ren, Kui; Zhang, Yanchao; Zhu, Bo.

Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Vol. 5258 LNCS 2008. p. 361-372 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics); Vol. 5258 LNCS).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Wang, Q, Ren, K, Zhang, Y & Zhu, B 2008, Opportunistic cooperation with receiver-based ratio combining strategy. in Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). vol. 5258 LNCS, Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), vol. 5258 LNCS, pp. 361-372, 3rd International Conference on Wireless Algorithms, Systems, and Applications, WASA 2008, Dallas, TX, United States, 10/26/08. https://doi.org/10.1007/978-3-540-88582-5-35
Wang Q, Ren K, Zhang Y, Zhu B. Opportunistic cooperation with receiver-based ratio combining strategy. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Vol. 5258 LNCS. 2008. p. 361-372. (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)). https://doi.org/10.1007/978-3-540-88582-5-35
Wang, Qian ; Ren, Kui ; Zhang, Yanchao ; Zhu, Bo. / Opportunistic cooperation with receiver-based ratio combining strategy. Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics). Vol. 5258 LNCS 2008. pp. 361-372 (Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)).
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