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GLOBECOM
2010
IEEE

An Exit-Chart Aided Design Procedure for Near-Capacity N-Component Parallel Concatenated Codes

10 years 9 months ago
An Exit-Chart Aided Design Procedure for Near-Capacity N-Component Parallel Concatenated Codes
1 Shannon's channel capacity specifies the upper bound on the amount of bits per channel use. In this paper, we explicitly demonstrate that twin-component turbo codes suffer from a capacity loss, when the component code rate is less than unity, which is shown by exploiting the so-called area properties of Extrinsic Information Transfer (EXIT) charts. This capacity loss is unavoidable for twin-component turbo codes, when the overall turbo coding rate is less than 1/2, while multiple-component turbo codes are capable of overcoming it by using unity-rate component codes. In order to demonstrate that multiplecomponent turbo codes are capable of exhibiting a better asymptotic performance, the minimum Signal Noise Ratio (SNR) required for the EXIT charts to have open convergence tunnels is used as our metric, which is referred to as `the open tunnel SNR threshold'. Furthermore, the employment of conventional two-dimensional EXIT charts is extended to facilitate the analysis of N-co...
Hong Chen, Robert G. Maunder, Lajos Hanzo
Added 11 Feb 2011
Updated 11 Feb 2011
Type Journal
Year 2010
Where GLOBECOM
Authors Hong Chen, Robert G. Maunder, Lajos Hanzo
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