Performance analysis of random access channel in OFDMA systems

Author

Koo, Insoo ; Seokjoo Shin ; Kim, Kiseon

Author_Institution

Dept. of Electr. Eng., Ulsan Univ., South Korea

fYear

2005

fDate

14-17 Aug. 2005

Firstpage

128

Lastpage

133

Abstract

The random access channel (RACH) in OFDMA systems is an uplink contention-based transport channel that is mainly used for subscriber stations to make a resource request to base stations. In this paper we focus on analyzing the performance of RACH in OFDMA systems such that the successful transmission probability, correctly detectable probability and throughput of RACH are analyzed. We also choose an access mechanism with binary exponential backoff delay procedure similar to that in IEEE 802.11. Based on the mechanism, we derive the delay and the blocking probability of RACH in OFDMA systems.

Keywords

OFDM modulation; frequency division multiple access; probability; wireless channels; OFDMA systems; RACH; binary exponential backoff delay procedure; blocking probability; correctly detectable probability; performance analysis; random access channel; successful transmission probability; throughput; uplink contention-based transport channel; Base stations; Centralized control; Delay; Digital video broadcasting; Internet; OFDM; Performance analysis; Quality of service; Software engineering; Throughput;

fLanguage

English

Publisher

ieee

Conference_Titel

Systems Communications, 2005. Proceedings

Print_ISBN

0-7695-2422-2

Type

conf

DOI

10.1109/ICW.2005.66

Filename

1515514