Research on Dynamic Spectrum Access Wireless Networks
Chunyuan Zhang · Jisuanji gongcheng · 2007
Dynamic spectrum access(DSA) networks provide a promising way out of the dilemma of spectrum scarcity and the underutilization of many licensed frequency bands.This paper introduces the trend of open spectrum and the enabling radio technology——cognitive radio and ultra-wideband.It discusses the architecture of DSA networks and introduces their radio resource management from the aspects of spectrum sensing,spectrum analysis,spectrum sharing and spectrum handoff.The routing,transport and QoS protocol design are discussed.The future research issues of DSA networks is investigated.