资料介绍
Introduction to 3G WCDMA Radio Communications System
Introduction to 3G WCDMA Radio Communications System
Physical Layer
Version 1e
Supplementary Material for a Lecture
NMP/Salo
27-Feb-2001
(Error correction issue 3-Mar-2001)
Lauri Pirttiaho
NMP/Oulu
1. Introduction 4
2. Principles of WCDMA 5
2.1 Short history of spread spectrum communications 5
2.2 Direct sequence spread spectrum system 5
2.3 Generating the spreading sequences 6
2.4 Multiple access methods 8
2.5 Benefits of the CDMA 9
3. Overview of the Physical Layer 11
3.1 Physical layer in OSI model 11
3.2 Services provided by L1 12
3.3 3GPP L