CDMA Technologies for Cellular Phone System , Sept. 11, 2003 1
Chapter 7. CDMA Technologies
for Cellular Phone System
Công ngh CDMA cho h th ng đi n tho i t
ong.
Sources:1) July 7th, 2004 - Takashi INOUE –KDDI R&D Laboratories Inc.
2) IS-95 - ECE 371VV - Erik Stauffer Yu Li Yan Sun
CDMA Technologies for Cellular Phone System , Sept. 11, 2003 2
CDMA Technologies for Cellular Phone System , Sept. 11, 2003 3
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Contents
Introduction (gi i thi u)
Spread Spectrum Technology
(công ngh tr i ph )
DS-CDMA
Spreading Codes
(mã tr i ph )
Features of CDMA
Đ c tính c a cdma
RAKE Receiver (b thu rake)
Power Control (đi u khi n công su t)
Frequency Allocation (c p phép t n s )
Soft Handoff (chuy n giao m m)