Section: 5.4.2B PUCCH format 4
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 block of complex-valued symbols is divided into sets, each corresponding to one SC-FDMA symbol. Transform precoding shall be applied according to where , and are given by Table 5.4.2C-1 for normal PUCCH format 4 and shortened PUCCH format 4, resulting in a block of complex-valued symbols . The variable, where represents the bandwidth of the PUCCH format 4 in terms of resource blocks, shall fulfil where is a set of non-negative integers.