This paper analyzes the performance of OFDM system based on IEEE 802.11a specification. Recently, there are increasing demands among wireless mobile subscribers on the broadband wireless multimedia services with high capacity and reliability. Data rate of a few tens or hundreds Mbps is required in multimedia services. However, ISI (Inter-Symbol Interference), which is the severe problem in the case of the existence of multipath fading, can be occurred more frequently in high-speed multimedia data transmission. In other words, degradation of transmitted data due to ISI becomes severer as the target data rates become higher.
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