A study on channel capacities of MC-CDMA MIMO and OFDM MIMO

Koichi Adachi, Fumiyuki Adachi, Masao Nakagawa

Research output: Contribution to conferencePaperpeer-review

11 Citations (Scopus)

Abstract

For the development of future wireless communication systems, an extremely spectrum-efficient transmission technology is required. Orthogonal frequency division multiplexing (OFDM) and multi-carrier code division multiple access (MC-CDMA) have been attracting much attention. The use of multiple-input multiple-output (MIMO) transmission is essential to achieve a very high speed data transmission with the limited bandwidth. In our previous paper, assuming perfect cancellation of inter-code interference (ICI), we have derived a channel capacity expression for MC-CDMA MIMO in a multi-cell environment and confirmed by numerical evaluation that MC-CDMA MIMO provides a slightly higher capacity than OFDM MIMO. In this paper, we theoretically show by using Jensen's inequality that the channel capacity of MC-CDMA MIMO assuming perfect ICI cancellation (ICIC) is always higher than or equal to that of OFDM MIMO. Furthermore, we compare the channel capacities of MIMO multiplexing and multiple single-input multiple output (SIMO) system.

Original languageEnglish
Pages1384-1388
Number of pages5
DOIs
Publication statusPublished - 2008 Dec 1
Event2008 11th IEEE Singapore International Conference on Communication Systems, ICCS 2008 - Guangzhou, China
Duration: 2008 Nov 192008 Nov 21

Other

Other2008 11th IEEE Singapore International Conference on Communication Systems, ICCS 2008
Country/TerritoryChina
CityGuangzhou
Period08/11/1908/11/21

Keywords

  • Channel capacity
  • Component
  • Jensen's inequality
  • MC-CDMA
  • MIMO
  • OFDM
  • Theoretical study

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Communication

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