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Differential modulation using space-time block codes
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DOI：10.1109/97.991138.png)
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Abstract
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In this letter, we consider a space-time differential modulation scheme where neither the transmitter nor the receiver has to know the channel. Our scheme is based on the theory of unitary space-time block codes. Compared to the existing differential modulation schemes for multiple antennas our scheme has a much smaller computational complexity. Moreover, our codes have a higher coding gain and lower bit error rate than the codes recently proposed by other researchers.
Keywords:
differential modulation
orthogonal designs
space-time block codes
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