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Complexity Adjusted Soft-Output Sphere Decoding by Adaptive LLR Clipping

Nikitopoulos, K and Ascheid, G (2010) Complexity Adjusted Soft-Output Sphere Decoding by Adaptive LLR Clipping IEEE Communications Letters, 15.

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A-posteriori probability (APP) receivers operating over multiple-input, multiple-output channels provide enhanced bit error rate (BER) performance at the cost of increased complexity. However, employing full APP processing over favorable transmission environments, where less efficient approaches may already provide the required performance at a reduced complexity, results in unnecessary processing. For slowly varying channel statistics substantial complexity savings can be achieved by simple adaptive schemes. Such schemes track the BER performance and adjust the complexity of the soft output sphere decoder by adaptively setting the related log-likelihood ratio (LLR) clipping value.

Item Type: Article
Divisions : Surrey research (other units)
Authors :
Ascheid, G
Date : 9 November 2010
DOI : 10.1109/LCOMM.2011.061011.110516
Uncontrolled Keywords : cs.IT, cs.IT, math.IT
Related URLs :
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 13:06
Last Modified : 24 Jan 2020 23:26

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