DocumentCode :
2359713
Title :
Area coverage and capacity enhancement by multihop connection of CDMA cellular network
Author :
Fujiwara, Atsushi ; Takeda, Shinji ; Yoshino, Hitoshi ; Otsu, Toru
Author_Institution :
Wireless Commun. Labs., NTF DoCoMo Inc., Japan
Volume :
4
fYear :
2002
fDate :
2002
Firstpage :
2371
Abstract :
In future broadband communication systems, a multi-hop scheme, in which stations between a mobile terminal and a base station relay signal transmissions, seems a promising approach for wide-area coverage and system capacity enhancement. We apply the multi-hop connection scheme to a code division multiple access (CDMA) cellular system and compare its performance to that of a conventional single-hop cellular system. In computer simulations, we assume a packet-based multi-cell environment considering intercell and intracell interference and that every mobile station is equipped with a function for relaying transmission signals. Simulations are performed for the cases where the area coverage cannot be obtained by using only a single-hop connection, and where full area coverage is obtained by a single-hop connection. In the former case, almost 90% of area coverage is obtained when the area coverage by a single hop is approximately 50%. In the latter case, packet arrival ratio is increased by using a multi-hop connection. The degree of improvement, however, is very slight due to interference between signals from base stations and relay stations.
Keywords :
broadband networks; cellular radio; code division multiple access; packet radio networks; radiofrequency interference; CDMA cellular network; area coverage enhancement; capacity enhancement; code division multiple access; intercell interference; intracell interference; multihop connection; packet arrival ratio; Base stations; Broadband communication; Computational modeling; Computer simulation; Interference; Land mobile radio cellular systems; Mobile computing; Multiaccess communication; Relays; Spread spectrum communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference, 2002. Proceedings. VTC 2002-Fall. 2002 IEEE 56th
ISSN :
1090-3038
Print_ISBN :
0-7803-7467-3
Type :
conf
DOI :
10.1109/VETECF.2002.1040645
Filename :
1040645
Link To Document :
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