A virtual layered space-frequency receiver for multiuser MIMO-OFDM systems

Akihito Taya, Satoshi Denno, Daisuke Umehara, Masahiro Morikura, Hidekazu Murata, Koji Yamamoto, Susumu Yoshida

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

1 Citation (Scopus)

Abstract

In this paper, we propose a virtual layered spacefrequency receiver with an ordered successive detector for multiuser multiple-input multiple-output (MU-MIMO) systems where multiple transmitters cooperate with one another. The proposed receiver enables high-speed transmission in the systems even if the transmitters know only partial channel state information (CSI). Actually, the receiver shows such superior performance when the concept of "virtual channel" is applied to cooperative MU-MIMO systems. Moreover, we propose an iterative detection scheme for the receiver; in this scheme, some signals from the Viterbi decoder are fed back to the ordered successive detector. The proposed iterative scheme helps improve the transmission speed when the number of cooperating transmitters is increased. We evaluate the performance of MIMO systems in which the transmitters have four antennas each and two users have two antennas. The receiver can double the transmission speed at the cost of 3 dB in E b/N 0 at a BER of 10 -4. Furthermore, the receiver can triple the transmission speed at the cost of 7 dB in E b/N 0 at a BER of 10 -4. When the system has three transmitters, we observe an error floor. However, the proposed iterative method can suppress the error to a value below BER = 10 -7.

Original languageEnglish
Title of host publication2011 IEEE Vehicular Technology Conference Fall, VTC Fall 2011 - Proceedings
DOIs
Publication statusPublished - Dec 23 2011
Externally publishedYes
EventIEEE 74th Vehicular Technology Conference, VTC Fall 2011 - San Francisco, CA, United States
Duration: Sep 5 2011Sep 8 2011

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252

Other

OtherIEEE 74th Vehicular Technology Conference, VTC Fall 2011
CountryUnited States
CitySan Francisco, CA
Period9/5/119/8/11

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

Fingerprint Dive into the research topics of 'A virtual layered space-frequency receiver for multiuser MIMO-OFDM systems'. Together they form a unique fingerprint.

  • Cite this

    Taya, A., Denno, S., Umehara, D., Morikura, M., Murata, H., Yamamoto, K., & Yoshida, S. (2011). A virtual layered space-frequency receiver for multiuser MIMO-OFDM systems. In 2011 IEEE Vehicular Technology Conference Fall, VTC Fall 2011 - Proceedings [6092886] (IEEE Vehicular Technology Conference). https://doi.org/10.1109/VETECF.2011.6092886