| Autor: |
Mohammed, Saif Khan, Viterbo, Emanuele, Hong, Yi, Chockalingam, Ananthanarayanan |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
"Modulation Diversity in Fading Channels with a Quantized Receiver,'' IEEE Transactions on Wireless Communications , vol. 11, no.1, pp. 316-327, Jan. 2012 |
| Druh dokumentu: |
Working Paper |
| Popis: |
In this paper, we address the design of codes which achieve modulation diversity in block fading single-input single-output (SISO) channels with signal quantization at receiver and low-complexity decoding. With an unquantized receiver, coding based on algebraic rotations is known to achieve modulation coding diversity. On the other hand, with a quantized receiver, algebraic rotations may not guarantee diversity. Through analysis, we propose specific rotations which result in the codewords having equidistant component-wise projections. We show that the proposed coding scheme achieves maximum modulation diversity with a low-complexity minimum distance decoder and perfect channel knowledge. Relaxing the perfect channel knowledge assumption we propose a novel training/estimation and receiver control technique to estimate the channel. We show that our coding/training/estimation scheme and minimum distance decoding achieve an error probability performance similar to that achieved with perfect channel knowledge. |
| Databáze: |
arXiv |
| Externí odkaz: |
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