A mapping method and device from PHICH to physical sub-carrier
A mapping method and sub-carrier technology, applied in the field of communication, to achieve the effect of ensuring diversity gain and little impact on performance
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[0087] Example 1
[0088] First, the resource units after the pilots are removed from the first three OFDM symbols are divided into physical resource groups, and numbered in the order of the time domain first and the frequency domain, as shown in Figure 1. The remaining physical resource groups corresponding to the physical resource groups are renumbered, and the correspondence between the new numbers and the initial numbers is established.
[0089] In the case of mapping the correct response message and / or the error response message to 3 OFDM symbols, the initial physical resource group numbers corresponding to the PCFICH on the first OFDM symbol are 4, 46, 88 and 130.
[0090] nt = 3; l ( i , m ) = ( i + m + N ID Cell ) mod ...
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[0101] Example 2
[0102] First, the resource units after the pilots are removed from the first OFDM symbol are divided into physical resource groups and numbered in the order of the time domain and the frequency domain, as shown in Figure 3. Then, the PCFICH is removed from the first OFDM symbol. The remaining physical resource groups after the corresponding physical resource group are renumbered, and the correspondence between the new numbers and the initial numbers is established.
[0103] In the case of mapping the correct response message and / or the error response message to 3 OFDM symbols, the initial physical resource group numbers corresponding to the PCFICH on the first OFDM symbol are 1, 13, 25 and 37.
[0104] N T =1; l(i,m)=0
[0105] l(0,1)=0; l(1,1)=0; l(2,1)=0;
[0106] N Total = 2 × N RB DL - 4 = 2 ...
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