RIS ID
15448
Abstract
In this paper, we design complementary codesets that significantly improve the quality of channel estimation in orthogonal frequency division multiplexing (OFDM) communication systems, with a focus on the recent MB-OFDM ultra-wideband (UWB) standard. The proposed time-domain OFDM channel estimation technique incurs only a nominal increase in computational complexity and is able to be readily retrofitted into the existing MB-OFDM standard. The underlying complementary codesets, found via an evolutionary algorithm, combine with the existing preamble synchronization sequences to yield asymptotically ideal auto-correlation functions (ACFs). We show how improvements exceeding 1 dB can be achieved in end-to-end packet error rate relative to conventional zero-forcing OFDM equalization.
Publication Details
This article was originally published as: Lowe, D & Huang, X, Ultra-wideband MB-OFDM channel estimation with complementary codes, 2006 International Symposium on Communications and Information Technologies (ISCIT), Bangkok, Thailand, 18-20 October 2006. Conference information is available here.