Title :
Self-similarities in transmission delay of CDMA cellular packet systems for varying transmission power control error
Author :
Mori, Kazuo ; Hidaka, Hirotoshi ; Kobayashi, Takehiko ; Nagaosa, Tomotaka ; Kobayashi, Hideo
Author_Institution :
Dept. of Electr. & Electron. Eng., Mie Univ., Japan
Abstract :
This paper discusses self-similarity in the uplink traffic of CDMA cellular packet communications. We estimate the Hurst parameter of transmission delay time, which is collected by using computer simulation, and analyze its power spectrum. We find that self-similarity and the 1/f power spectrum are observed in transmission delay time on the uplink of a CDMA cellular packet system. Self-similarity is also analyzed for various errors of transmission power control in order to discover the system conditions under which self-similarity appears. The results of these analyses show that the power control error has a large effect on the self-similarity: self-similarity appears in a system with an accurate power control, whereas it does not appear in a system with a large power control error.
Keywords :
cellular radio; code division multiple access; delay estimation; fractals; packet radio networks; power control; spectral analysis; telecommunication control; telecommunication traffic; time-varying channels; 1/f power spectrum; CDMA; Hurst parameter; cellular packet communications; computer simulation; power control error; power spectrum analysis; self-similarity; transmission delay time estimation; transmission power control; uplink traffic; Communication system traffic control; Computer errors; Computer simulation; Delay effects; Delay estimation; Error correction; Multiaccess communication; Parameter estimation; Power control; Traffic control;
Conference_Titel :
Communications, 2002. ICC 2002. IEEE International Conference on
Print_ISBN :
0-7803-7400-2
DOI :
10.1109/ICC.2002.997429
