Title :
Performance of a random OFDMA system for mobile communications
Author :
Nogueroles, R. ; Bossert, M. ; Donder, A. ; Zyablov, V.
Author_Institution :
Dept. of Inf. Technol., Ulm Univ., Germany
Abstract :
In this paper we consider the uplink performance of an OFDMA (orthogonal frequency division multiple access) system for mobile communications. We describe the random OFDMA system which is based on MC-FDMA (multicarrier FDMA), and where each user has a set of randomly selected subchannels. We also analyze the problem of block synchronization in an OFDM transmission. Then we describe three different system implementations depending on the underlying level of the block synchronization. We define the considered performance criteria and discuss the influence of the different system implementations. Finally, we show some simulation results for the performance of the different system implementations
Keywords :
frequency division multiple access; land mobile radio; random processes; synchronisation; MC-FDMA; OFDM transmission; block synchronization; mobile communications; multicarrier FDMA; orthogonal frequency division multiple access; random OFDMA system; randomly selected subchannels; system implementations; uplink performance; Bandwidth; Base stations; Broadband communication; Frequency conversion; Frequency division multiaccess; Frequency synchronization; Mobile communication; Multimedia systems; OFDM; Telephony;
Conference_Titel :
Broadband Communications, 1998. Accessing, Transmission, Networking. Proceedings. 1998 International Zurich Seminar on
Conference_Location :
Zurich
Print_ISBN :
0-7803-3893-6
DOI :
10.1109/IZSBC.1998.670242
