Keith Jarett

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A&ract-In the so-called “twin paradox” of relativity theory, one spaceship leaves another at velocity o = /3c and returns to find that the other ship has aged more by a factor y = (1 /?2)-‘/2. The asymmetty is first isolated in order to resolve the paradox. Then the principle of relativity is used to derive the relative aging factor y and the relativistic(More)
Bergmans and Cover identified the capacity region of the Gaussian degraded broadcast channel, where different receivers observe the transmitted signal with different signal-to-noise ratios. This letter presents a superposition turbo-coding scheme that performs within 1 dB of the capacity region boundary of the degraded broadcast channel at a bit-error rate(More)
Bergmans and Cover identified the capacity region of the Gaussian degraded broadcast channel, where different receivers observe the transmitted signal with different signal to noise ratios. This paper presents a superposition turbo coding scheme that performs within 1 dB of the capacity region boundary of the degraded broadcast channel at BER of 10−5.(More)
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