Optimizing downlink throughput with user cooperation and scheduling in adaptive cellular networks

Ernest S. Lo, K. B. Letaief

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

7 Citations (Scopus)

Abstract

User cooperation is an emerging transmission framework where users act as relays of each other to provide extra diversity paths for better overall performance. However, most work in the literature focused only on the physical-layer properties and operations of a fixed pair of source and destination at a particular time instant. In contrast, we consider the downlink throughput optimization for an adaptive cellular network with both user cooperation and scheduling. Firstly, we evaluate several commonly used cooperation strategies under different fairness constraints. We show that the decode-and- forward protocol cannot deliver any capacity gain over its non-cooperative counterpart when users are scheduled for maximizing the overall system throughput Secondly, the placement of relaying timeslots, which directly affects the cooperation performance, is investigated over existing frame structures so that user cooperation can be enabled easily in conventional networks. It is shown that multiple relays can actually be supported in different timeslots concurrently with other transmissions through scheduling and the corresponding optimal relays selection and power allocation are derived.

Original languageEnglish
Title of host publication2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
Pages4345-4350
Number of pages6
DOIs
Publication statusPublished - 27 Nov 2007
Event2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 - Kowloon, China
Duration: 11 Mar 200715 Mar 2007

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Other

Other2007 IEEE Wireless Communications and Networking Conference, WCNC 2007
CountryChina
CityKowloon
Period11/3/0715/3/07

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Lo, E. S., & Letaief, K. B. (2007). Optimizing downlink throughput with user cooperation and scheduling in adaptive cellular networks. In 2007 IEEE Wireless Communications and Networking Conference, WCNC 2007 (pp. 4345-4350). [4204968] (IEEE Wireless Communications and Networking Conference, WCNC). https://doi.org/10.1109/WCNC.2007.792