Title :
Experimental performance results of IMT-2000 CDMA TDD system
Author :
Futakata, Toshiyuki ; Itoh, Makoto ; Moon, Sung Uk ; Uebayashi, Shinji
Author_Institution :
Radio Network Dev. Dept., NTT DoCoMo, Inc., Kanagawa, Japan
fDate :
6/23/1905 12:00:00 AM
Abstract :
The third generation mobile radio system IMT-2000 CDMA TDD has been specified in the Third Generation Partnership Project (3GPP) with IMT-2000 CDMA TDD. This paper presents our TDD test-beds specifications receiving technology, downlink diversity, and open loop transmit power control (OL-TPC) as well as some field and our laboratory experiment results. According to our laboratory experiments, the joint detection can achieve better performance than RAKE receiver in case of two or more user transmission. The selective transmit diversity (STD) type transmit diversity (TX-Div) improves the BER performance around 4 dB compared to case without diversity. As the results of our field experiments, we acquired the characteristics of OL-TPC and a BER. We confirmed the feasibility of the CDMA TDD system from these results
Keywords :
code division multiple access; diversity reception; error statistics; land mobile radio; multiuser channels; power control; radio links; radio receivers; signal detection; telecommunication control; 3GPP; BER performance; IMT-2000 CDMA TDD system; RAKE receiver; TDD test-beds specifications; Third Generation Partnership Project; cellular radio; downlink diversity; experimental performance results; joint detection; laboratory experiment results; open loop transmit power control; receiving technology; selective transmit diversity; third generation mobile radio system; Downlink; Fading; Laboratories; Multiaccess communication; Multipath channels; Power control; Radio network; Space technology; Telecommunication standards; Testing;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Fall. IEEE VTS 54th
Conference_Location :
Atlantic City, NJ
Print_ISBN :
0-7803-7005-8
DOI :
10.1109/VTC.2001.956956
