Section: 5.5.2.2.1 Reference signal sequence
Content: The PUCCH demodulation reference signal sequence for PUCCH formats 1, 1a, 1b, 2, 2a, 2b, and 3 is defined by where and is the number of antenna ports used for PUCCH transmission. For PUCCH formats 2a and 2b, equals for , where is defined in clause 5.4.2. For all other cases, The sequence is given by clause 5.5.1 with and where the expression for the cyclic shift is determined by the PUCCH format. For PUCCH formats 1, 1a and 1b, is given by where , , and are defined by clause 5.4.1. The number of reference symbols per slot and the sequence are given by Table 5.5.2.2.1-1 and 5.5.2.2.1-2, respectively. For PUCCH formats 2, 2a and 2b, is defined by clause 5.4.2. The number of reference symbols per slot and the sequence are given by Table 5.5.2.2.1-1 and 5.5.2.2.1-3, respectively. For PUCCH format 3, is given by where is given by Table 5.5.2.2.1-4 and and for the first and second slot in a subframe, respectively, are obtained from clause 5.4.2A. The number of reference symbols per slot and the sequence are given by Table 5.5.2.2.1-1 and 5.5.2.2.1-3, respectively. Table 5.5.2.2.1-1: Number of PUCCH demodulation reference symbols per slot Table 5.5.2.2.1-2: Orthogonal sequences for PUCCH formats 1, 1a and 1b Table 5.5.2.2.1-3: Orthogonal sequences for PUCCH formats 2, 2a, 2b and 3. Table 5.5.2.2.1-4: Relation between and for PUCCH format 3. The PUCCH demodulation reference signal sequence for PUCCH formats 4 and 5 is defined by where and Clause 5.5.1 defines the sequence where . The cyclic shift in a slot is given as with where the values of and are given by Clause 5.5.2.1.1 and with obtained as described in clause 5.4.2C.