Performance and configuration of M-CMA (modified constant modulus algorithm) adaptive array using polyphase filters

Satoshi Denno, Takashi Ohira

Research output: Contribution to journalArticlepeer-review

Abstract

As a way to realize an adaptive array of small size, low cost, and low power consumption, there exists a configuration method combining analog signal processing and digital signal processing. M-CMA has been proposed as a control algorithm for such an approach. However, when this approach is applied to an actual communication system, there arises the problem that the narrow-band filter in the receiver prevents M-CMA from converging to the desired solution. In this paper, in order to effectively operate an M-CMA adaptive array in the presence of a narrow-band filter, a configuration is proposed in which polyphase filters are used as narrow-band filters. Its superior interference suppression capability is confirmed by a theoretical analysis and computer simulation.

Original languageEnglish
Pages (from-to)53-64
Number of pages12
JournalElectronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)
Volume85
Issue number12
DOIs
Publication statusPublished - Aug 6 2002
Externally publishedYes

Keywords

  • Adaptive array
  • Blind algorithm
  • Perturbation
  • Polyphase filter

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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