Decoding for peak-power reduction and error-correction...

Details Decoding for peak-power reduction and error-correction... Decoding for peak-power reduction and error-correction...

2007-08-07

2007-08-07

Payne, David C. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S296000

Reexamination Certificate

active

10704435

ABSTRACT:
An input signal is encoded using a multicarrier code that provides a PEP reduction of 3k [dB] and a minimum distance dmin=√{square root over (2k)} d, by restricting the code so as to have one or more 2k+1-carrier kernels in which |Δθ(2k)−Δθ*(2k)|≡π (for any k) holds for the phase difference Δθ(2k) between a set of 2k−1carriers and another set of 2k−1carriers and the phase difference Δθ*(2k) between a set of 2k−1carriers and another set of 2k−1carriers, where k is an integer not smaller than 1. By setting k to 1, and by further providing the condition |Δθ(2k)−Δθ*(2k)|=π/2 between two kinds of 4-carrier kernels one equal in number to the other, a PEP reduction of 3.7 dB and dmin=√{square root over (2)} d can be achieved. By extending the code length using these two kinds of 4-carrier kernels as basic units, a PEP reduction of 3k+0.7 [dB] and dmin=√{square root over (2k)} d can be achieved.

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