Implementation of Low Power and Area Efficient Novel Interleaver for WLAN Applications

Abstract

Wireless communication is one of the most important research area in communication field. WLAN and WiMAX are emerging standards for wireless broadband communication system. Orthogonal Frequency Division Multiplexing (OFDM) is used to speed up data transfer and to reduce adverse effects such as inter symbol interference(ISM) and Inter Channel Interference (ICI) is used in OFDM. An Interleaver is based on finite state machine (FSM) for modeling multimode addressable generator. The proposed method works for all code rates and modulation techniques used in IEEE.802.16e. As per the IEEE.802.16e standard the interleaver can be performed by 2 permutation steps. But the implementation becomes difficult because of floor function.   The proposed method works with minimum loss of logic cells and flips flops compared to existing approaches.