The sphere-packing bound represents a suitable tool for assessing the limiting performance of a digital communication system. In fact, most of the modern transmission techniques, adopting capacity approaching codes, such as turbo codes, or Low Density Parity Check (LDPC) codes, may offer a performance that is within 1 dB from the bound, both for Additive White Gaussian Noise (AWGN) and for the fading channel. Unfortunately, the sphere-packing exponent may be difficult to compute, and this may prevent its adoption as a performance estimator. This paper presents and discusses the accuracy of an approximate expression of the bound, that may be used for evaluating the achievable performance of a communication system, without resorting to cumbersome simulations.

A sphere-packing exponent approximation

BABICH, FULVIO
2013-01-01

Abstract

The sphere-packing bound represents a suitable tool for assessing the limiting performance of a digital communication system. In fact, most of the modern transmission techniques, adopting capacity approaching codes, such as turbo codes, or Low Density Parity Check (LDPC) codes, may offer a performance that is within 1 dB from the bound, both for Additive White Gaussian Noise (AWGN) and for the fading channel. Unfortunately, the sphere-packing exponent may be difficult to compute, and this may prevent its adoption as a performance estimator. This paper presents and discusses the accuracy of an approximate expression of the bound, that may be used for evaluating the achievable performance of a communication system, without resorting to cumbersome simulations.
2013
9781467363372
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2694210
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