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Orthogonal Space-Time Block Coding for Continuous Phase Modulation with Frequency-Domain Equalization
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DOI：10.1109/TCOMM.2009.12.080524.png)
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摘要
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In this letter, an orthogonal space-time (ST) block coding (STBC) technique for continuous phase modulation (CPM) is proposed and combined with a frequencydomain equalizer (FDE) to obtain high performance gains over frequency-selective channels. The new method maintains the constant envelope and phase continuity of the CPM waveforms perfectly by using appropriate tail symbols during the addition of cyclic prefix and interblock transitions and, therefore, has no negative impact on the spectral efficiency. Because the ST-coded CPM blocks remain orthogonal, FDE is applied as in the case of single antenna transmissions without any increase in the computational load. Simulations corroborate the performance improvement offered by STBC while also preserving the desired bandwidth efficiency of CPM.
Keyword:
Space-time block coding
continuous phase modulation
minimum mean-squared error
frequency-domain equalization
frequency-selective channel
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8.3
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1.2W
被引数:
3.6W
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