Complexity-reduced per-antenna multiple access interference cancellation for DAN using DS-CDMA

S. Inoshita, Hiroyuki Miyazaki, Fumiyuki Adachi

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

DS-CDMA allows all accessing users to share the same carrier frequency and hence, can alleviate the sophisticated channel management problem. Recently, we investigated a distributed antenna network (DAN) using direct-sequence code division multiple access (DS-CDMA) with joint antenna diversity and equalization and showed that DAN achieves higher uplink capacity than centralized antenna network (CAN). The uplink capacity is limited due to multiple access interference (MAI). In this paper, to further improve the uplink capacity, we propose a complexity-reduced per-antenna MAI cancellation before diversity combining, which is suitable for DAN using DS-CDMA. In the per-antenna MAI cancellation, first, interfering users on each antenna are sorted in descending order of the instantaneous received power. Then, a predetermined number of interfering users having the highest received powers are selected on each antenna to be cancelled in the frequency-domain before diversity combining. It is shown by computer simulation that per-antenna MAI cancellation before diversity combining achieves almost the same uplink capacity as full MAI cancellation after diversity combining.

本文言語English
ホスト出版物のタイトル2014 IEEE 80th Vehicular Technology Conference, VTC2014-Fall, Proceedings
出版社Institute of Electrical and Electronics Engineers Inc.
ISBN(電子版)9781479944491, 9781479944491
DOI
出版ステータスPublished - 2014 11 24
イベント80th IEEE Vehicular Technology Conference, VTC 2014-Fall - Vancouver, Canada
継続期間: 2014 9 142014 9 17

出版物シリーズ

名前IEEE Vehicular Technology Conference
ISSN(印刷版)1550-2252

Other

Other80th IEEE Vehicular Technology Conference, VTC 2014-Fall
国/地域Canada
CityVancouver
Period14/9/1414/9/17

ASJC Scopus subject areas

  • コンピュータ サイエンスの応用
  • 電子工学および電気工学
  • 応用数学

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