Section: 5.2.1 Resource grid
Content: The transmitted signal in each slot is described by one or several resource grids of subcarriers and SC-FDMA symbols. The resource grid is illustrated in Figure 5.2.1-1. The quantity depends on the uplink transmission bandwidth configured in the cell and shall fulfil where and are the smallest and largest uplink bandwidths, respectively, supported by the current version of this specification. The set of allowed values for is given by TS 36.101[ Evolved Universal Terrestrial Radio Access (E-UTRA); User Equipment (UE) radio transmission and reception ]  [7]. The number of SC-FDMA symbols in a slot depends on the cyclic prefix length configured by the higher layer parameter UL-CyclicPrefixLength and is given in Table 5.2.3-1. An antenna port is defined such that the channel over which a symbol on the antenna port is conveyed can be inferred from the channel over which another symbol on the same antenna port is conveyed. There is one resource grid per antenna port. The antenna ports used for transmission of a physical channel or signal depends on the number of antenna ports configured for the physical channel or signal as shown in Table 5.2.1-1. The index is used throughout clause 5 when a sequential numbering of the antenna ports is necessary. Figure 5.2.1-1: Uplink resource grid Table 5.2.1-1: Antenna ports used for different physical channels and signals