Section: 5.4.2C PUCCH format 5
Content: The block of bits shall be scrambled with a UE-specific scrambling sequence, resulting in a block of scrambled bits according to where the scrambling sequence is given by clause 7.2. The scrambling sequence generator shall be initialised with at the start of each subframe where is the C-RNTI. The block of scrambled bits shall be QPSK modulated as described in Clause 7.1, resulting in a block of complex-valued modulation symbols where . The complex-valued symbols shall be divided into sets, each corresponding to one SC-FDMA symbol. Block-wise spreading shall be applied according to where , and are given by Table 5.4.2C-1 for normal PUCCH format 5 and shortened PUCCH format 5, and is given by Table 5.4.2C-2 with provided by higher layers. The block-wise spread complex-valued symbols shall be transform precoded according to where , resulting in a block of complex-valued symbols . Table 5.4.2C-1: The quantities and Table 5.4.2C-2: Orthogonal sequences