A reduced complexity coded OFDM system with MIMO antennas for broadband wireless communications

Defeng Huang, K. B. Letaief

Research output: Contribution to conferencePaper

2 Citations (Scopus)


Orthogonal frequency division multiplexing (OFDM) has been recently receiving significant attention because of its spectrum efficiency and ability in providing reliable wideband wireless data access. Multiple transmit and/or multiple receive (MIMO) antennas can be employed with OFDM to better trade off frequency efficiency and power efficiency. In this paper, we study a coded OFDM (COFDM) system with MIMO antennas for high-rate wireless data transmission. To take advantage of the inherent space diversity, we propose a symbol-based space combining technique, which can be implemented using only one Fast Fourier Transform (FFT) block and the same weighting coefficients for the whole OFDM symbol. Thus, in contrast to conventional sub-carrier baseds pace combining, the system complexity is significantly reduced while almost the same diversity order is achieved. Furthermore, it is shown that the proposed technique is not sensitive to channel variations when used in reciprocal channels such as that in a time division duplex (TDD) scenario.

Original languageEnglish
Number of pages5
Publication statusPublished - 1 Dec 2002
EventGLOBECOM'02 - IEEE Global Telecommunications Conference - Taipei, Taiwan, Province of China
Duration: 17 Nov 200221 Nov 2002


OtherGLOBECOM'02 - IEEE Global Telecommunications Conference
CountryTaiwan, Province of China


ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change

Cite this

Huang, D., & Letaief, K. B. (2002). A reduced complexity coded OFDM system with MIMO antennas for broadband wireless communications. 661-665. Paper presented at GLOBECOM'02 - IEEE Global Telecommunications Conference, Taipei, Taiwan, Province of China.