RIS ID
22214
Abstract
In this paper, we derive and analyze a companding algorithm based on the hyperbolic tangent and inverse hyperbolic tangent functions for use in orthogonal frequency division multiplexing (OFDM) transceivers. Probability density functions (PDFs) that approximate the transmitted and received OFDM signals in the presence of additive white Gaussian noise (AWGN) are derived and used to analyze the degree of companding relative to the signal-to-noise ratio (SNR) and clipping level. A set of optimal companding linearity coefficients for the multiband OFDM (MB-OFDM) ultra-wideband (UWB) standard are presented.
Publication Details
This conference paper was originally published as Lowe, D, Huang, X, Optimal Adaptive Hyperbolic Companding for OFDM, 2nd International Conference on Wireless Broadband and Ultra Wideband Communications AusWireless 2007, 27-30 Aug, 24-24.