Title :
Capacity evaluation with time base analysis in W-CDMA system
Author :
Kat, Yoshiki ; Hattori, Takeshi
Author_Institution :
Dept. of Electr. & Electron. Eng., Sophia Univ., Tokyo, Japan
Abstract :
Assuming the voice process of each user is modeled by a two-state Markov process, the variance of the number of users who are talking during connection can be expressed and then we show the advantage of the statistical multiplexing effect based on voice activation. Compared to the conventional evaluation method, which is analyzed only by statistical average data, the new method of evaluation has the advantage that the quality of system in a certain time duration can be evaluated by computer simulation of the voice process. Besides, since each user has his or her own speaking condition, we are able to express the effects of statistical multiplexing effect and interference equalization.
Keywords :
Markov processes; broadband networks; channel capacity; code division multiple access; interference suppression; land mobile radio; multiplexing; multiuser channels; radio networks; radiofrequency interference; statistical analysis; voice communication; W-CDMA system; capacity evaluation; computer simulation; interference equalization; speaking condition; statistical average data; statistical multiplexing; time base analysis; time duration; two-state Markov process; voice activation; voice process; Bandwidth; Base stations; Capacity planning; Computer simulation; Interference; Markov processes; Mobile communication; Multiaccess communication; Probability; Speech analysis;
Conference_Titel :
Wireless Personal Multimedia Communications, 2002. The 5th International Symposium on
Print_ISBN :
0-7803-7442-8
DOI :
10.1109/WPMC.2002.1088138
