Title :
The implementation of a base station transceiver for WLL system based on wideband CDMA
Author :
Chong, Youngjun ; Kang, Sanggee ; Lee, Ilkyoo ; Kim, Bongkyum ; Hong, Heonjin
Author_Institution :
Radio Technol. Sect., ETRI, South Korea
Abstract :
The implementation of a BTS (base station transceiver) for a WLL system using a wideband CDMA (W-CDMA) method is presented. It consists of three boards; receiver, transmitter, and RF controller. Some RF parameters are considered and simulated by the RF simulation software using commercial and customized component specifications. The implemented transceiver of 5 MHz RF channel bandwidth satisfies the system requirements of a transceiver such as dynamic range, receiver sensitivity, and spurious emission suppression in the transmitter. At the receiver, the experimental measurement showed a noise figure (NF) of 2.86 dB and a dynamic range of above 60 dB in AGC locking. At the transmitter, the -49.34 dBc of spurious emission suppression is attained when the output power of the transmitter is 34.3 dBm. These results are good enough to meet standard performance specifications
Keywords :
broadband networks; code division multiple access; subscriber loops; transceivers; 2.86 dB; 5 MHz; RF channel bandwidth; RF controller; RF parameters; RF simulation software; W-CDMA; WLL system; base station transceiver; commercial component specifications; customized component specifications; dynamic range; experimental measurement; noise figure; output power; receiver; receiver sensitivity; spurious emission suppression; standard performance specifications; transmitter; wideband CDMA; Bandwidth; Base stations; Dynamic range; Multiaccess communication; Noise figure; Noise measurement; Radio frequency; Transceivers; Transmitters; Wideband;
Conference_Titel :
Communications, 1998. ICC 98. Conference Record. 1998 IEEE International Conference on
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-4788-9
DOI :
10.1109/ICC.1998.682583
