Exploiting Transmit Buffer Information at the Receiver in Block-Fading Channels

Open Access
Research Article
Part of the following topical collections:
  1. Cross-Layer Design for the Physical, MAC, and Link Layer in Wireless Systems


It is well known that channel state information at the transmitter (CSIT) leads to higher throughput in fading channels. We motivate the use of transmit buffer information at receiver (TBIR). The thesis of this paper is that having partial or complete instantaneous TBIR leads to a lower packet loss rate in block-fading channels assuming the availability of partial CSIT. We provide a framework for the joint design and analysis of feedback (FB) and feed-forward (FF) information in fading channels. We then introduce two forms of TBIR—statistical and instantaneous—and show the gains of each form of TBIR using a heuristic scheme. For a Rayleigh fading channel, we show that in certain cases the packet error rate reduces by nearly an order of magnitude with just one bit of feed-forward information of TBIR.


Loss Rate State Information Packet Loss Quantum Information Fading Channel 
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Copyright information

© Dinesh Rajan. 2009

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Authors and Affiliations

  1. 1.Department of Electrical EngineeringSouthern Methodist UniversityDallasUSA

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