Convolutional codes with optimum distance spectrum

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doi:10.1109/4234.803468

Convolutional codes with optimum distance spectrum

1999-11-01

129

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AI

DOI：10.1109/4234.803468

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New convolutional codes with rates 1/2, 1/3, and 1/4 are presented for constraint lengths ranging from 3 to 15. These new codes are maximum free-distance codes. Furthermore, the codes have optimized information error weights, resulting in a tow bit-error rate for binary communication on both additive white Gaussian noise (AWGN) and Rayleigh fading channels. Improved coding gains of as much as 0.6 dB compared to previously published codes have been observed for coherent BPSK over a Rayleigh fading channel and a wide range of signal-to-mise ratios.

Keyword:

convolutional codes

optimum distance spectrum

Convolutional codes with optimum distance spectrum

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