Finite Block-length Analysis of the Incremental Redundancy HARQ
Journal article, 2014

This letter studies the power-limited throughput of a communication system utilizing incremental redundancy (INR) hybrid automatic repeat request (HARQ). We use some recent results on the achievable rates of finite-length codes to analyze the system performance. With codewords of finite length, we derive closed-form expressions for the outage probabilities of INR HARQ and study the throughput in the cases with variable-length coding. Moreover, we evaluate the effect of feedback delay on the throughput and derive sufficient conditions for the usefulness of the HARQ protocols, in terms of power-limited throughput. The results show that, for a large range of HARQ feedback delays, the throughput is increased by finite-length coding INR HARQ, if the sub-codeword lengths are properly adapted.

Author

Behrooz Makki

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Tommy Svensson

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Michele Zorzi

University of Padua

IEEE Wireless Communications Letters

2162-2337 (ISSN)

Vol. 3 5 529-532 6888474

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

Communication Systems

Signal Processing

DOI

10.1109/LWC.2014.2353059

More information

Latest update

5/9/2018 2