Joint Tx/Rx signal processing for uplink distributed antenna network using single-carrier MU-MIMO

Shinya Kumagai, Shohei Yoshioka, Fumiyuki Adachi

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

1 Citation (Scopus)

Abstract

A combination of distributed antenna network (DAN), where a number of antennas are spatially distributed within a macro cell, and multi-user (MU) multiple-input multiple-output (MIMO) can achieve high total throughput. Recently, we proposed a minimum mean square error based joint transmit and receive linear filtering (joint Tx/Rx MMSE filtering) for single-carrier (SC)-MU-MIMO uplink. Joint Tx/Rx MMSE filtering transforms the MIMO channel between each user equipment (UE) and base station (BS) to multiple eigenmodes, and applies MMSE based power allocation (PA). MMSE-PA achieves good bit error rate (BER) performance by allocating much power to the eigenmodes having low channel gains (or eigenvalues). However, in DAN, large gaps exist among eigenvalues since the average received signal power of DA is different from each other, and this leads to a significant throughput degradation. Therefore, PA should be designed from the view point of throughput (i.e., Shannon's channel capacity). This paper proposes a joint Tx/Rx WF-MMSE filtering for uplink DAN using SC-MU-MIMO. Water-filling (WF)-PA which maximizes the throughput and MMSE-PA are applied in eigenmode-domain and in frequency-domain, respectively. Numerical results show that proposed filtering achieves better throughput performance than the previously proposed joint Tx/Rx MMSE filtering.

Original languageEnglish
Title of host publication2015 10th International Conference on Information, Communications and Signal Processing, ICICS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467372183
DOIs
Publication statusPublished - 2016 Apr 26
Event10th International Conference on Information, Communications and Signal Processing, ICICS 2015 - Singapore, Singapore
Duration: 2015 Dec 22015 Dec 4

Publication series

Name2015 10th International Conference on Information, Communications and Signal Processing, ICICS 2015

Other

Other10th International Conference on Information, Communications and Signal Processing, ICICS 2015
CountrySingapore
CitySingapore
Period15/12/215/12/4

Keywords

  • MU-MIMO
  • UE-DA grouping
  • distributed antenna
  • power allocation
  • single-carrier
  • uplink

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Information Systems
  • Signal Processing

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