A Fast Soft Bit Descrambling Method Used in Communication
A soft-bit, bit-based technology, applied in the field of soft-bit fast descrambling, to achieve the effect of improving real-time processing efficiency and realizing simplicity
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[0038] Embodiment comprises the following steps:
[0039] Step1: Read 8-bit scrambled bits c 7 c 6 c 5 c 4 c 3 c 2 c 1 c 0 , which is the same scrambling bit as the sending end, used as descrambling bit;
[0040] Step2: Read the lower 4 scrambling bits c 3 c 2 c 1 c 0 Corresponding to the 4 scrambling soft bits in the table Table 1 is shown in Table 1 according to the table generated by the above three proposed methods of descrambling soft bits;
[0041] For example, c 3 c 2 c 1 c 0 =0110, the soft bits corresponding to these four bits are "0x00", "0xFF", "0xFF", and "0x00" respectively.
[0042] Step3: Set the soft bits that need to be descrambled after demodulation output as Read the lower 4 soft bits of the soft bits that need to be descrambled after demodulation
[0043] Step4: The soft bits read in Step3 that need to be descrambled and the scrambled soft bits read in Step2 Perform XOR operation and save the result;
[0044] Step5: Read the uppe...
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