Performance Evaluation of OFDM using BPSK,QPSK and 16- QAM modulation Techniques

摘要

Wireless communication is one of the most popular areas in the communication field today. Development of next generation wireless networks depends on suitable wireless and access techniques. These techniques needs to provide high data rates and should maintain a certain level of robustness against errors. There are numerous challenges to implement these systems. These problems include propagation effects in particular multipath propagation, capacity limits due to spectral availability, the need for asynchronous access, Intersymbol Interference (ISI). Orthogonal Frequency-Division Multiplexing (OFDM) effectively mitigates intersymbol interference caused by the delay spread of wireless channels. Therefore, it has been used in many wireless systems and adopted.....