A power-saving implementation of generalized selection combining by output thresholding

Hong Chuan Yang*, Mohamed Slim Alouini

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

3 Scopus citations


Generalized selection combining (GSC) delivers the largest possible diversity benefit for a given hardware-complexity constraint. However, it also increases the power consumption of the receiver with the path selection and the maximum ratio combining (MRC) operations. In this paper, we investigate a variant of GSC, termed output thresholded GSC (OT-GSC). More specifically, to reduce the power consumption of the GSC scheme, we introduce a threshold check at the GSC combiner output. The resulting OT-GSC combiner tries to raise the signal to noise ratio of the combined signal above a threshold by using the least combiner resources (in terms of path estimations and active MRC branches) possible. The tradeoff between power consumption and performance is illustrated with selected numerical examples.

Original languageEnglish (US)
Number of pages5
StatePublished - 2004
Externally publishedYes
EventGLOBECOM'04 - IEEE Global Telecommunications Conference - Dallas, TX, United States
Duration: Nov 29 2004Dec 3 2004


OtherGLOBECOM'04 - IEEE Global Telecommunications Conference
Country/TerritoryUnited States
CityDallas, TX

ASJC Scopus subject areas

  • General Engineering


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