Frequency-domain QRM-MLD block signal detection for single-carrier multi-user MIMO uplink

Masashi Itagaki, Kazuki Takeda, Fumiyuki Adachi

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

7 Citations (Scopus)

Abstract

Multi-user multi-input multi-output (multi-user MIMO) can increase the number of users simultaneously accessing the same base station (BS) without increasing the signal bandwidth. MIMO signal detection which can provide better bit error rate (BER) performance than linear detection with less computational complexity is indispensable in order to enhance the uplink cellular capacity of multi-user MIMO. Maximum likelihood detection (MLD) employing QR decomposition and M algorithm (QRM-MLD) is one of its candidates. It can reduce the complexity of MLD drastically and obtain BER performance close to MLD. QRM-MLD has been widely studied for MIMO spatial multiplexing using orthogonal frequency division multiplexing (OFDM). Recently, it has been reported that QRM-MLD can be applied to the signal detection of single-carrier (SC) transmission in a frequency selective fading channel. In this paper, we introduce the frequency-domain QRM-MLD block signal detection to the SC multi-user MIMO uplink of a cellular system and evaluate the uplink capacity. We show that QRM-MLD can obtain larger uplink cellular capacity compared to the minimum mean square error detection (MMSED) at the cost of the increased computational complexity, but with much less than MLD.

Original languageEnglish
Title of host publicationProceedings - 2010 2nd IEEE International Conference on Network Infrastructure and Digital Content, IC-NIDC 2010
Pages687-691
Number of pages5
DOIs
Publication statusPublished - 2010 Dec 1
Event2010 2nd IEEE International Conference on Network Infrastructure and Digital Content, IC-NIDC 2010 - Beijing, China
Duration: 2010 Sep 242010 Sep 26

Publication series

NameProceedings - 2010 2nd IEEE International Conference on Network Infrastructure and Digital Content, IC-NIDC 2010

Other

Other2010 2nd IEEE International Conference on Network Infrastructure and Digital Content, IC-NIDC 2010
CountryChina
CityBeijing
Period10/9/2410/9/26

Keywords

  • Multi-user MIMO
  • QRM-MLD
  • Single-carrier
  • Uplink capacity

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Hardware and Architecture

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    Itagaki, M., Takeda, K., & Adachi, F. (2010). Frequency-domain QRM-MLD block signal detection for single-carrier multi-user MIMO uplink. In Proceedings - 2010 2nd IEEE International Conference on Network Infrastructure and Digital Content, IC-NIDC 2010 (pp. 687-691). [5657869] (Proceedings - 2010 2nd IEEE International Conference on Network Infrastructure and Digital Content, IC-NIDC 2010). https://doi.org/10.1109/ICNIDC.2010.5657869