WCDMA Air Interface Training

2008-9-17 13:15:02 4191

0 WCDMA Air Interface Training WCDMA Air Interface Training Part1 CDMA Wireless Technology Evolution from 2G to 3G The CDMA Transmitter Voice Coding CRC Coding FEC Coding Interleaving Channelization Coding (Orthogonal/Walsh Codes) Spread Spectrum Multiple Access Coding (PN Codes) Serial-to-Parallel Data Conversion Spectral Containment Filtering I/Q Modulation Part 2 CDMA Power Control,RAKE Receiver,and Soft Handover CDMA Reception Issues Unequal received power levels degrade SSMA performance Near-Far Ratio, terrain, RF obstacles, “Turn-the-Corner” effects, ... Multipath fading cancellation Time of Arrival delay spread Part 3 CDMA Capacity Considerations Cell Planning FDMA systems Frequency Reuse Planning SNR Link Budget TDMA systems Frequency Reuse Planning Timeslot Allocation SNR Link Budget CDMA systems Code Reuse Planning SNR Link Budget Interference Link Budget AlYVUYPx.rar (1.59 MB, 下载次数: 8 ) 1
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