Title :
Performance evaluation of a hybrid CDMA/TDMA system and the entropy of the power spread
Author :
Ootes, A.C.J. ; Azaed, H. ; Aghvami, H. ; Prasad, R.
Author_Institution :
Telecommun. & Traffic-Control Syst. Group, Delft Univ. of Technol., Netherlands
Abstract :
The performance of a hybrid CDMA/TDMA system with a total system bandwidth of 20 MHz is evaluated for different multipath models in the 800 MHz band. The system provides for two services (a voice service at 10 kbit/s and a data service at 100 kbit/s) at different bit rates and bit error rates and uses multiple antennas. Two other topics are also introduced and discussed: the entropy of the power spread and the inclusion of signal reliability parameters into the soft decision Viterbi decoding process
Keywords :
Rayleigh channels; Viterbi decoding; access protocols; code division multiple access; coding errors; data communication; diversity reception; entropy; error statistics; fading; land mobile radio; multipath channels; telecommunication network reliability; time division multiple access; voice communication; 10 kbit/s; 100 kbit/s; 20 MHz; 800 MHz; GSM; Gausian channel; QPSK; Rayleigh fading; TDMA channels; antenna diversity; bit error rates; bit rates; data service; hybrid CDMA/TDMA system; indoor radio; multipath models; multiple antennas; performance evaluation; power spread entropy; signal reliability parameters; soft decision Viterbi decoding; system bandwidth; urban environment; voice service; Bit error rate; Entropy; Fading; GSM; Multiaccess communication; Multipath channels; Power system modeling; System performance; Time division multiple access; Viterbi algorithm;
Conference_Titel :
Vehicular Technology Conference, 1997, IEEE 47th
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-3659-3
DOI :
10.1109/VETEC.1997.596389
