Title :
A new random access scheme for TD-OFDMA systems
Author :
Xuelin, Gu ; Hui, Tian ; Ning, Yang ; Ping, Zhang
Author_Institution :
Sch. of Telecom Eng., Beijing Univ. of Posts & Telecommun., China
Abstract :
A simple and efficient random access scheme which is suitable for TD-OFDMA systems is proposed in this paper. In the scheme, the network terminals adopt different random access processing methods utilizing the special FRRACH (first refusal random access channel) according to the real-time needs of the traffic. Comparisons of theoretical analysis and simulation results between the proposed scheme and the multiple RACH random access scheme in TD-OFDMA systems show the superiority of the new scheme with respect to both access probability and average delay.
Keywords :
OFDM modulation; frequency division multiple access; TD-OFDMA systems; first refusal random access channel; random access processing methods; random access scheme; Access protocols; Analytical models; Communication system traffic control; Mobile communication; OFDM; Quality of service; Real time systems; Signal processing algorithms; Telecommunication traffic; Traffic control;
Conference_Titel :
Communications and Information Technology, 2005. ISCIT 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9538-7
DOI :
10.1109/ISCIT.2005.1566953
