343 research outputs found
The Political Economy of Fiscal Adjustments
No full textmacroeconomics, Political Economy, Fiscal Adjustments
Multiprocessor implementation of an iterative turbo decoder and concatenation with an outer block code
No full textError statistics of turbo decoder and performance improvement due to outer algebraic codes
No full text
Capacity achieving CPM schemes
No full textThe pragmatic approach to coded continuous-phase modulation (CPM) is proposed as a capacity-achieving low-complexity alternative to the serially concatenated CPM (SC-CPM) coding scheme. In this paper, we first perform a selection of the best spectrally efficient CPM modulations to be embedded into SC-CPM schemes. Then, we consider the pragmatic capacity (a.k.a. BICM capacity) of CPM modulations and optimize it through a careful design of the mapping between input bits and CPM waveforms. The so obtained schemes are cascaded with an outer serially concatenated convolutional code to form a pragmatic coded-modulation system. The resulting schemes exhibit performance very close to the CPM capacity without requiring iterations between the outer decoder and the CPM demodulator. As a result, the receiver exhibits reduced complexity and increased flexibility due to the separation of the demodulation and decoding functions
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