Vectorization achieving method and device of LTE system resource mapping
A technology of resource mapping and system resources, which is applied in the branch office to provide special service devices, transmission systems, digital transmission systems, etc., can solve problems such as low computing efficiency and inability to efficiently parallel map, achieve fast computing speed, wide application range, The effect of improving usage efficiency
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Embodiment 1
[0068] This embodiment mainly introduces how to implement vectorized mapping for OFDM symbols without reference signals in the present invention. Assume that the bandwidth is 10MHz, and the resource block RB allocated to the user is set to 1 at the corresponding position of the pointer bitmap, since the OFDM symbol does not contain reference signals, that is, all 12 consecutive subcarriers in one resource block RB need to be mapped, so that A series of operations such as judging whether the corresponding position of the resource mapping identification table RscTableFlag has been marked by other signals is omitted, and the data can be directly read from the memory, and then mapped to the corresponding position of the resource mapping table RscTable. Its process is as follows image 3 As shown, from the point of view of instructions, only a simple Load and Store operation can be completed.
[0069] like this Figure 4 As shown, the embodiment of the present invention provides ...
Embodiment 2
[0074] This embodiment mainly introduces how to implement vectorized mapping for OFDM symbols with reference signals in the present invention. Also assume that the bandwidth is 10MHz, and the reference signal is only CRS. In the case of a normal CP, its resource mapping structure is as follows figure 1 As shown, in a subframe, it is divided into 14 OFDM symbols horizontally and 600 subcarriers vertically, where the 1st, 5th, 8th, and 12th OFDM symbols (in the case of single antenna or 2 antennas) or in the first, 2, 5, 8, 9, 12 OFDM symbols (in the case of 4 antennas) contain CRS reference signals, and every 12 subcarriers contain 2 (in the case of single antenna) or 4 (in the case of 2 or 4 antennas) ) CRS reference signal, and the number in the OFDM symbol is fixed.
[0075] Such as Figure 5 As shown, the embodiment of the present invention provides a vectorized resource mapping method in which a reference signal exists in a current OFDM symbol. The method comprises the ...
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