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 ệ ệ ố ệ ạ ổ
ong.
Sources:1) July 7th, 2004 - Takashi INOUE –KDDI R&D Laboratories Inc.
2) IS-95 - ECE 371VV - Erik Stauffer Yu Li Yan Sun
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Contents
•Introduction (gi i thi u)ớ ệ
•Spread Spectrum Technology
(công ngh tr i ph )ệ ả ổ
•DS-CDMA
•Spreading Codes
(mã tr i ph )ả ổ
•Features of CDMA
Đ c tính c a cdmaặ ủ
–RAKE Receiver (b thu rake)ộ
–Power Control (đi u khi n công su t)ề ể ấ
–Frequency Allocation (c p phép t n s )ấ ầ ố
–Soft Handoff (chuy n giao m m)ể ề