Transmission method of non-codebook pre-coding in long term evolution-advanced (LTE-A) system
A technology of LTE-A and transmission method, which is applied in the field of wireless mobile communication, and can solve the problems of codebook precoding algorithm complex feedback codebook sequence number and occupied channel resources, etc., achieving low algorithm complexity, less occupied channel resources and excellent performance Effect
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[0029] A transmission method for non-codebook precoding in the uplink of an LTE-A system, involving transmission operations at two operating terminals, a terminal and a base station, the steps of which are as follows figure 1 As shown, it mainly includes:
[0030] For terminal,
[0031] Step S101: For a certain time t, obtain the channel state information at time t-τ through channel estimation, and perform geometric mean decomposition (GMD) on it to obtain the precoding matrix P;
[0032] Step S102: if figure 2 As shown, according to the precoding matrix P, precoding is performed on the channel-coded and symbol-modulated signal s to be transmitted, and the precoded data, specific pilot sequence, and transmission signal power sent to the transmission channel at time t; where the specific pilot sequence is a specific all-0 sequence; for the base station,
[0033] Step S201: Calculate the noise power in the transmission process according to the specific pilot sequence After ...
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