Computer Science – Networking and Internet Architecture
Scientific paper
2010-02-25
M. M. Hossain, M. M. Rahmand and M. A. Alim, "Performance Analysis of Uplink & Downlink Transmission in CDMA System", Journal
Computer Science
Networking and Internet Architecture
Journal of Telecommunications,Volume 1, Issue 1, pp84-86, February 2010
Scientific paper
CDMA is a multiple access method in which the user's uses spread spectrum techniques and occupy the entire spectrum whenever they transmit. In wireless communication signal-to-noise ratio (SNR) is the very important parameter that influences the system performance. Any mode of mobile transmission is not free from channel impairment such as noise, interference and fading. This channel impairment caused signal distortion and degradation in SNR.Also there are differences between uplink (forward channel) and downlink (reverse channel).Along with these differences, both the links use different codes for chanellizing the individual users. This paper simulates the expressions for the pdfs of the SNR for both uplink and downlink transmission assuming that the system is operating at an average signal-to-noise ratio is 6dB per information bit.
Alim Md. A.
Hossain Md. M.
Rahman Md. M.
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