Almost linear interleaver and its application in coded OFDM over Rayleigh fading channel

This paper proposes a novel deterministic inter-leaver, called almost linear interleaver (ALI) as the generalization of block and linear interleavers, and discusses its parameter/depth selection for coded orthogonal frequency division multiplexing (COFDM) system over Rayleigh fading channel. The concept of diversity guard is introduced to guarantee the achievable maximum diversity order with a reasonable complexity. Simulation results shown that the proposed design always outperforms random interleaver (RI) and the block interleaver (BI) adopted by the IEEE 802.11a standard.