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Bill, I have a quick question about MIMO. In your presentation, you stated that the MIMO architecture can help to reduce the DSP complexity from 10 to 1.5. For a 4x4 MIMO system, the maximum complexity reduction is 4 times if I am not wrong. In this extreme case, a one-channel DSP engine can be reused for 4 channels without any modification. However even in such a case, the DSP complexity is still 2.5. Xiaopeng