Turbo-like Processing for Scalable Interleaving Pattern Generation: application to 60 GHz UWB-OFDM systems

Abstract

This paper presents a novel scalable block interleaving algorithm based on a turbo structure leading to an interleaving spreading optimization and a multi-level structure preserving special data multiplexing at the PHY layer level. These properties are assessed and optimized upon binary stream using 16-QAM data symbols to deliver bit rates near 1 Gbps over short range OFDM radio transmissions. The interleaving proposal is analyzed and optimized on a 60 GHz Ultra Wide Band OFDM system. The binary interleaving spreading is examined in a multi-level scale considering both interleaving spreading on encoded bits within and between data sub-carriers. A comparison is performed with a ECMA-like, random and Relative Prime binary interleaving. Index Terms interleaving, iterative interleaving, UWB-OFDM transmissions.