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Generalized Partial Feedback Based Orthogonal Space-Time Block Coding
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DOI：10.1109/TWC.2009.080352.png)
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Abstract
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Recently, a full rate orthogonal space-time block code achieving full diversity while preserving low decoding complexity with very limited feedback was proposed. Based on a feedback of only p - 1 bits, these codes exhibit a higher coding gain as well. In this work, we propose a low complexity, though close to optimal, feedback selection scheme. Furthermore, we analyze the performance of these codes with arbitrary number of transmit and receive antennas. We show that with this feedback based codes full diversity of n(T)n(R)p is obtained. Finally, we provide closed form expressions for the ergodic and outage mutual information as well as error rates.
Keywords:
Feedback
space-time coding
MIMO
quadratic forms
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10.7
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