Downlink MIMO with frequency-domain packet scheduling for 3GPP LTE

Suk Bok Lee*, Sayantan Choudhury, Ahmad Khoshnevis, Shugong Xu, Songwu Lu

*Corresponding author for this work

Research output: Chapter in Book or Report/Conference proceedingConference Proceedingpeer-review

85 Citations (Scopus)

Abstract

This paper addresses the problem of frequency domain packet scheduling (FDPS) incorporating spatial division multiplexing (SDM) multiple input multiple output (MIMO) techniques on the 3GPP Long Term Evolution (LTE) downlink. We impose the LTE MIMO constraint of selecting only one MIMO mode (spatial multiplexing or transmit diversity) per user per transmission time interval (TTI). First, we address the optimal MIMO mode selection (multiplexing or diversity) per user in each TTI in order to maximize the proportional fair (PF) criterion extended to frequency and spatial domains. We prove that the SU-MIMO (single-user MIMO) FDPS problem under the LTE requirement is NP-hard and therefore, we develop two approximation algorithms (one with full channel feedback and the other with partial channel feedback) with provable performance bounds. Based on 3GPP LTE system model simulations, the approximation algorithm with partial channel feedback is shown to have comparable performance to the one with full channel feedback, while significantly reducing the channel feedback overhead by nearly 50%.

Original languageEnglish
Title of host publicationIEEE INFOCOM 2009 - The 28th Conference on Computer Communications
Pages1269-1277
Number of pages9
DOIs
Publication statusPublished - 2009
Externally publishedYes
Event28th Conference on Computer Communications, IEEE INFOCOM 2009 - Rio de Janeiro, Brazil
Duration: 19 Apr 200925 Apr 2009

Publication series

NameProceedings - IEEE INFOCOM
ISSN (Print)0743-166X

Conference

Conference28th Conference on Computer Communications, IEEE INFOCOM 2009
Country/TerritoryBrazil
CityRio de Janeiro
Period19/04/0925/04/09

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