Novel MIMO channel estimation at transmitter for LTE release 10 systems

Enoch Lu, Yingxue Li, I. Tai Lu

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

Abstract

In frequency division duplex (FDD) wireless MIMO communications, the receiver conventionally feeds back quantized channel state information (CSI) of the forward link to the transmitter for precoder design. As systems are moving towards multi user and other advanced configurations, it's becoming more important to have accurate CSI at the transmitter (CSIT). In this paper, a double codebook-like mechanism is proposed to enable channel estimation at the transmitter. The novel feedback mechanism and estimation techniques are numerically tested in a time-varying, frequency selective system employing single user MIMO and multi user MIMO. Compared to a LTE Release 8 based scheme, the proposed scheme is seen to a) provide significantly better multi user MIMO performance when single antenna receivers are employed b) allow the transmitter to perform multi user MIMO much more frequently.

Original languageEnglish (US)
Title of host publication2012 International Conference on Computing, Networking and Communications, ICNC'12
Pages198-203
Number of pages6
DOIs
StatePublished - 2012
Event2012 International Conference on Computing, Networking and Communications, ICNC'12 - Maui, HI, United States
Duration: Jan 30 2012Feb 2 2012

Publication series

Name2012 International Conference on Computing, Networking and Communications, ICNC'12

Other

Other2012 International Conference on Computing, Networking and Communications, ICNC'12
CountryUnited States
CityMaui, HI
Period1/30/122/2/12

Keywords

  • CSIT
  • Channel Estimation
  • Double Codebook
  • LTE Rel. 10
  • Limited Feedback
  • MU-MIMO
  • OFDM

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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