Development of a new OFDM transceiver without guard interval

This paper develops a new orthogonal frequency division multiplexing (OFDM) receiver model that does not use the guard interval. This proposed technique (termed as preprocessing technique) is further extended to the IEEE 802.11a standard for wireless local area networks (WLANs) in this paper. The paper also addresses the other major OFDM receiver design issues, i.e., symbol detection, carrier frequency offset estimation, and channel estimation. The preamble approved by the IEEE 802.11a Standard is used to accomplish synchronization and estimation at the receiver. The paper compares the performance of the conventional OFDM system, which uses the guard interval with that of the newly proposed OFDM system that does not use the guard interval.