Title :
MC-FDMA and MC-TDMA versus MC-CDMA and SS-MC-MA: performance evaluation for fading channels
Author_Institution :
Aerosp. Center, Inst. for Commun. Technol., Oberpfaffenhofen, Germany
Abstract :
The multi-carrier (MC) multiple access schemes MC-FDMA, MC-TDMA, MC-CDMA and the previously proposed SS-MC-MA scheme are investigated and compared for the suitability in the uplink and the downlink of a mobile radio system. By presenting a bandwidth efficiency plan for the different MC multiple access schemes in fading channels, the influence of the channel code rate, the system load, and the spreading code length is presented. Moreover, results with oneand two-dimensional pilot symbol aided channel estimation are shown for the various MC multiple access schemes considering typical multipath propagation scenarios in the uplink and the downlink
Keywords :
channel coding; code division multiple access; fading channels; frequency division multiple access; land mobile radio; multipath channels; multiuser channels; parameter estimation; spread spectrum communication; time division multiple access; 1D pilot symbol aided channel estimation; 2D pilot symbol aided channel estimation; MC-CDMA; MC-FDMA; MC-TDMA; OFDM; SS-MC-MA; bandwidth efficiency plan; channel code rate; downlink; fading channels; mobile radio system; multi-carrier multiple access; multicarrier modulation; multipath propagation; performance evaluation; spreading code length; system load; uplink; Bandwidth; Channel estimation; Digital video broadcasting; Downlink; Fading; Frequency diversity; Land mobile radio; Multiaccess communication; Multicarrier code division multiple access; OFDM modulation;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on
Conference_Location :
Sun City
Print_ISBN :
0-7803-4281-X
DOI :
10.1109/ISSSTA.1998.726226
