Title :
Performance comparison of spread ALOHA and CDMA wireless systems
Author :
Achi, H. ; Hellany, A. ; Liyana-pathirana, R.
Author_Institution :
Sch. of Electr. Eng. & Ind. Design, Univ. of Western Sydney, Penrith South DC, NSW, Australia
Abstract :
Wireless multiple access technology has grown over several decades, with new protocols being developed. Spread ALOHA has become one of the advanced techniques promising several advantages over existing conventional and spread spectrum based wireless systems. With spread ALOHA the wireless system becomes simpler, operationally flexible, higher in bandwidth and may accommodate high number of users [Dennis et al., 1997]. In this paper the performance, in terms of throughput and time delay, of spread ALOHA system as compared with code-division-multiple-access (CDMA) is analysed and evaluated in the presence of noise and interference. Mathematical expressions are derived to estimate probability of error, throughput and time delay to compare both wireless systems.
Keywords :
access protocols; code division multiple access; delay estimation; error statistics; radiofrequency interference; spread spectrum communication; CDMA wireless system; code division multiple access; mathematical expression; probability of error estimation; spread ALOHA system; throughput estimation; time delay estimation; wireless multiple access technology; Access protocols; Bandwidth; Delay effects; Delay estimation; Interference; Multiaccess communication; Performance analysis; Spread spectrum communication; Throughput; Wireless application protocol;
Conference_Titel :
Applied Electromagnetics and Communications, 2003. ICECom 2003. 17th International Conference on
Print_ISBN :
953-6037-39-4
DOI :
10.1109/ICECOM.2003.1290964
