DocumentCode :
430258
Title :
Study of antenna array based multipath propagation phenomenon in LAS-CDMA standard
Author :
Ng, Chee Kyun ; Khatun, Sabira ; Ali, Borhanuddin Mohd ; Jamuar, Sudhanshu Shekhar ; Ismail, Mahamod
Author_Institution :
Dept. of Comput. & Commun. Syst. Eng., Universiti Putra Malaysia, Malaysia
fYear :
2004
fDate :
5-6 Oct. 2004
Firstpage :
23
Lastpage :
27
Abstract :
Throughout the history of wireless communications, spatially diverse antenna array systems have being important in improving the radio link between wireless users. Moreover, this system is proposed to reduce the multipath fading through its narrowly directive radiation beam. The introduction of an interference free window in the delay domain from the new LAS-CDMA standard has received much attention for furthering research on multipath delay spread. In this paper, we studied the effect of angular spread on maximum excess delay in multipath propagation environments. Then, we examined the application of antenna arrays in the LAS-CDMA standard to overcome this multipath phenomenon. First of all, the multipath propagation literature is reviewed, followed by the explanation of maximum angular spread in a simple discrete ring of scatterers model. Comparison analyses are made between the conventional omnidirectional antenna and narrow beam antenna array. Finally, the analytical performances in term of power delay profile are presented.
Keywords :
4G mobile communication; antenna arrays; code division multiple access; directive antennas; diversity reception; electromagnetic wave scattering; fading channels; multipath channels; radiowave propagation; 4G mobile radio communication; LAS-CDMA standard; delay domain interference free window; discrete scatterer ring model; large area synchronous code division multiple access; maximum angular spread; maximum excess delay; multipath delay spread; multipath fading; multipath propagation; multipath propagation phenomenon; narrow beam antenna array; narrowly directive radiation beam; omnidirectional antenna; power delay profile; spatially diverse antenna array systems; Antenna arrays; Antennas and propagation; Delay effects; Directive antennas; Fading; History; Interference; Propagation delay; Radio link; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
RF and Microwave Conference, 2004. RFM 2004. Proceedings
Print_ISBN :
0-7803-8671-X
Type :
conf
DOI :
10.1109/RFM.2004.1411064
Filename :
1411064
Link To Document :
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