A constant envelope modulation method using orthogonal frequency allocated multi-carrier MSK for broadband wireless system

Tuan Thanh Ta, Shoichi Oshima, Hiroshi Oguma, Suguru Kameda, Tadashi Takagi, Kazuo Tsubouchi

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

2 Citations (Scopus)

Abstract

With progression of scaling technique in silicon complementary metal-oxide semiconductor (Si-CMOS) process, it is available to produce radio frequency (RF) circuits using Si-CMOS for broadband wireless system, to reduce cost and size of devices. But in contrast, Si-CMOS RF circuit is deteriorated from circuits which use compound semiconductors. In order to reduce RF circuit's requirements, we propose a multi-carrier transmission with constant envelope modulation for high speed wireless system. Modulating method for sub-carrier is minimum shift keying. All sub-carriers are processed individually to reduce operating bandwidth requirement of intermediate frequency devices, and to keep envelope of input signal of power amplifier (PA) constant, so that the requirements of PAs can be reduced. Moreover, to reduce overall RF bandwidth, sub-carriers are allocated with overlaps. In the case of using 4 sub-carriers, we can get 375MHz baseband bandwidth and 2250MHz RF bandwidth, for 2Gbps system. Then the spectral efficiency is 0.89bit/s/Hz. The degradation of bit error rate is negligibly small.

Original languageEnglish
Title of host publicationICCE 2010 - 3rd International Conference on Communications and Electronics
Pages253-257
Number of pages5
DOIs
Publication statusPublished - 2010 Dec 1
Event3rd International Conference on Communications and Electronics, ICCE 2010 - Nha Trang, Viet Nam
Duration: 2010 Aug 112010 Aug 13

Publication series

NameICCE 2010 - 3rd International Conference on Communications and Electronics

Other

Other3rd International Conference on Communications and Electronics, ICCE 2010
Country/TerritoryViet Nam
CityNha Trang
Period10/8/1110/8/13

Keywords

  • Broadband
  • MSK
  • Multi-carrier
  • Wireless

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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