Sunday, April 18, 2010

the multimedia services

High data-rate,high reliable transmission and guarantee end-to-end QoS are the primary objectives of the next generation mobile communication system. Many technologies such as Multiple-input Multiple-output (MIMO), Orthogonal Frequency Division Multiplexing (OFDM) and Adaptive transmission and so on are adopted in IEEE802.11n system, therefore, the transmission rate is more than 100Mbps, even can reach up to 600Mbps. Meanwhile IEEE802.11n is backward compatible with IEEE802.11a/b/g and its capacity of resisting disturbance is enhanced, all of this best clothes blog can be able to meet the multimedia services and the high quality voice requirements. However, the wireless signal coverage is enlarged as well as the subscriber’s mobile area is expanded.Base station, channel, transmitting power, bandwidth, code words, frequency, time slot and space angle and so on discount wedding prom dresses are included in the scope of the radio resources. Radio wedding dresses form china Resource Management (RRM) is the planning and scheduling for the air interface resources of the mobile communication system. It hopes to access as many subscribers as possible with limited radio resource as well as a dresses 1std certain planning coverage and service quality. The technology cheap nike shoes related to power control, channel allocation, access control, switch, load control and packet scheduling and other information. The goal of the RRM is to provide quality assurance for radio subscriber terminals under the limited bandwidth conditions.
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