Hybrid automatic retransmission method and device
A hybrid automatic retransmission and retransmission technology, which is applied in the field of computer and communication, can solve the problem of pilot signal density, that is, the number and position of the same, the accuracy of channel estimation is not improved, and the time domain fading and frequency fading estimation of pilot channel In order to achieve the effect of reducing the number of retransmissions, reducing the bit error rate and improving reliability
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[0034] The embodiment of the present invention uses different pilot patterns for pilot mapping and channel estimation during the first transmission and retransmission of the data stream, thereby improving the accuracy of channel estimation, reducing the bit error rate, and improving the reliability of transmission Sex and data transmission efficiency.
[0035] In the hybrid retransmission process of this embodiment, both the transmitter and the receiver are improved. The following describes the implementation process of the transmitter and receiver in the hybrid retransmission process.
[0036] See figure 1 In this embodiment, the flow of the method for implementing the transmitting end in the hybrid automatic retransmission is as follows:
[0037] Step 101: The transmitting end performs sub-carrier mapping on pilots according to the first pilot pattern, and performs sub-carrier mapping on data, and sends the mapped pilots and data.
[0038] Step 102: The transmitting end receives an ...
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