From: Low-complexity multiuser MIMO downlink system based on a small-sized CQI quantizer
1-bit quantizer (N = M) | 1-bit quantizer (N= M- 1) | |
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Level 1 |
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Level 2 |
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2-bit quantizer ( N = M ) | 2-bit quantizer ( N = M - 1) | |
Level 1 |
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Level 2 |
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Level 3 |
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Level 4 |
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Expected |
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CQI |