Title :
On the performance of different detection techniques for OFDM-CDMA in fading channels
Author_Institution :
Inst. for Commun. Technol., German Aerosp. Res. Establ., Oberpfaffenhofen, Germany
Abstract :
The combination of orthogonal frequency division multiplexing (OFDM) with code division multiple access (CDMA) systems has attained increasing significance in mobile radio communications. In this paper basic OFDM-CDMA detection techniques based on simple equalization algorithms, and improved detection techniques, such as the newly proposed iterative detection applying the minimum mean square error (MMSE) criterion, are analyzed in the mobile radio environment. This analysis enables one a comparison between known and new OFDM-CDMA detection techniques in terms of spectral efficiency and receiver complexity
Keywords :
code division multiple access; computational complexity; equalisers; fading; frequency division multiplexing; iterative methods; land mobile radio; least mean squares methods; radio receivers; radio spectrum management; time-varying channels; OFDM-CDMA; code division multiple access; detection techniques; equalization algorithms; fading channels; iterative detection; minimum mean square error; mobile radio communication; orthogonal frequency division multiplexing; performance; receiver complexity; spectral efficiency; Base stations; Communications technology; Fading; Interference; Iterative algorithms; Land mobile radio; Mean square error methods; Multiaccess communication; OFDM modulation; Receivers;
Conference_Titel :
Global Telecommunications Conference, 1995. GLOBECOM '95., IEEE
Print_ISBN :
0-7803-2509-5
DOI :
10.1109/GLOCOM.1995.502768
