Title :
A CDMA data overlay of the GSM network
Author :
Widdowson, Terry
Author_Institution :
BT Labs., Ipswich, UK
Abstract :
The feasibility of providing a CDMA overlay of the GSM network is considered. The services to be provided by the proposed network are complimentary to those offered on the current GSM system. It is shown that without some form of mutual interference suppression the overlay is not viable, since neither systems has adequate carrier to interference ratio (CIR). However, relatively simple notch filters in the CDMA transmitter and receiver can increase the overall spectral efficiency by a factor of 3.32 for a 1 dB deterioration in baseline GSM CIR
Keywords :
code division multiple access; 1 dB; CDMA data overlay; GSM network; carrier to interference ratio; interference suppression; notch filters; receiver; spectral efficiency; transmitter; Bandwidth; Base stations; Finite impulse response filter; Frequency; GSM; Interference suppression; Multiaccess communication; Radiofrequency interference; Telephone sets; Transmitters;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 1997. Waves of the Year 2000. PIMRC '97., The 8th IEEE International Symposium on
Conference_Location :
Helsinki
Print_ISBN :
0-7803-3871-5
DOI :
10.1109/PIMRC.1997.624383
