Method for improving the reliability of data transmission over R

Pulse or digital communications – Repeaters – Testing

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375 40, 375 58, 375 60, 375100, 455 52, H04L 102

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046413189

ABSTRACT:
A method and apparatus for reducing the bit error probability of data transmitted over a Rayleigh fading channel are disclosed.
A relatively high bit rate serial stream of data is divided into N parallel relatively low bit rate streams of data. A controlled amount of intersymbol interference is introduced in the parallel streams. The N parallel streams are then transmitted simultaneously over the Rayleigh fading channel. Each bit in the N parallel stream of data has a duration longer than the duration of the typical Rayleigh fade. Thus there is a reduced probability that a Rayleigh fade will cause a bit error.

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IEE Transactions on Communications; vol. COM-33, No. 7, Jul. 1985, pp. 665-675.

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