PERFORMANCE ENHANCEMENT OF WI-MAX MOBILE HANDOVER OFDM USING M-QAM SYSTEM WITH BEST-RELAY SELECTION

According to present skill in future generation networks will be categorized by variable and high data rates, quality of services, unbroken mobility both within a network and between networks of different technologies and service providers. An important aspect of components in a global next generation network is standardization to allow vendor independence and interoperability. A technology developed to fulfill these characteristics, standardized by IEEE, is 8 02.16, also referred to as WI - MAX. The mobile World - Wide Interoperability for Microwave Access (Mobile W I - MAX) air interface accepts orthogonal frequency division multiple access (OFDMA).