Title :
Performance comparison of different multiple access schemes for the downlink of an OFDM communication system
Author :
Rohling, Hermann ; Gruneid, R.
Author_Institution :
Inst. of Telecommun., Tech. Univ. Braunschweig, Germany
Abstract :
A comparison of different multiple access schemes for the downlink of an OFDM communication system is performed. The access methods OFDM-TDMA, OFDM-FDMA, and OFDM-CDMA are described and compared with regard to flexibility and computation complexity. Further on, the performance of the different approaches is quantitatively analysed, comparing the resulting BER for the given OFDM system in a time-variant and frequency-selective radio channel
Keywords :
Rayleigh channels; access protocols; code division multiple access; coding errors; error statistics; fading; frequency division multiple access; frequency division multiplexing; land mobile radio; radio links; time division multiple access; time-varying channels; BER; OFDM communication system; OFDM-CDMA; OFDM-FDMA; OFDM-TDMA; Rayleigh fading; access methods; computation complexity; downlink; frequency-selective radio channel; mobile communication system; multipath propagation; multiple access schemes; performance comparison; time-variant radio channel; Bit error rate; Delay; Demodulation; Downlink; Multiaccess communication; OFDM; Performance analysis; Radio broadcasting; TV broadcasting; Time division multiple access;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.605406
