6:Opportunistic Communication and Multiuser ECS Diversity vireless oundations Example:CDMA Systems Two main types of compensating mechanisms: 1.Channel diversity: frequency diversity via Rake combining time diversity via interleaving and coding macro-diversity via soft handoff transmit/receive antenna diversity 2.Interference management: 一 power control interference averaging Fundamentals of Wireless Communication,Tse&Viswanath 46: Opportunistic Communication and Multiuser Diversity Fundamentals of Wireless Communication, Tse&Viswanath 4 Example: CDMA Systems Two main types of compensating mechanisms: 1. Channel diversity: – frequency diversity via Rake combining – time diversity via interleaving and coding – macro-diversity via soft handoff – transmit/receive antenna diversity 2. Interference management: – power control – interference averaging