Title :
Smart antenna system with orthogonal codes
Author :
Ng, Chee Kyun ; Ali, Borhanuddin Mohd ; Jamuar, Sudhanshu Shekhar ; Ismail, Mahamod
Author_Institution :
Dept. of Comput. & Commun. Syst. Eng., Univ. Putra Malaysia, Malaysia
fDate :
31 May-2 June 2004
Abstract :
Smart antenna, which improves the performance of wireless systems, suppress all interfering signals, and increase the system capacity. The objective of this paper is to provide an analysis of system capacity when using smart antenna with the orthogonal code. A new technique, which uses orthogonal codes in multiple beams to distinguish multiuser is introduced. The properties of linkair communications´ large area synchronous (LAS) or smart codes, which are claimed to be fully orthogonal code and are used to combat major interferences, are studied. The effect of spatial multiple beams in an area where density of users is very condense in a cell is also examined. Finally, the system performance in term of system capacity is presented.
Keywords :
adaptive antenna arrays; cellular radio; code division multiple access; multibeam antennas; LAS; large area synchronous; linkair communication; orthogonal code; smart antenna; smart code; spatial multiple beam; system capacity; Bandwidth; Bit error rate; Fading; Frequency division multiaccess; GSM; Interference; Multiaccess communication; System performance; Systems engineering and theory; Time division multiple access;
Conference_Titel :
Emerging Technologies: Frontiers of Mobile and Wireless Communication, 2004. Proceedings of the IEEE 6th Circuits and Systems Symposium on
Print_ISBN :
0-7803-7938-1
DOI :
10.1109/CASSET.2004.1322002