d CP length of 16.67 us would allow support of cell radii as large as 2.5 km. To provide enhanced multicast and broadcast services, LTE has the capability to transmit Multicast and Broadcast content over a Single Frequency Network (MBSFN), where a time-synchronized common waveform is transmitted from multiple eNBs, allowing macro-diversity combining of multi-cell transmissions at the UE. The cyclic prefix is utilized to cover the difference in the propagation delays, which makes the MBSFN trans- mission appear to the UE as a transmission from a single large cell. Transmission on a dedicated carrier for MBSFN with the possibility of using a longer CP with a sub-carrier bandwidth of 7.5 kHz is supported, as well as transmission of MBSFN on a carrier with both MBMS and unicast transmissions using time division multiplexing [116]. E-UTRA is designed to operate in the frequency bands defined in Table 9-16. The requirements are defined for 1.4, 3, 5, 10, 15, and 20 MHz bandwidth with a specific configuration in terms of number of resource blocks. Figure 9-65 illustrates the relationship between the total channel bandwidth and the transmission bandwidth, i.e., the number of resource blocks. The channel raster is 100 kHz, which means the center frequency must be a multiple of 100 kHz. To support transmission in paired and 9.15 3GPP LTE physical layer protocols Table 9-15 3GPP LTE OFDMA Parameters [30,97] Parameter Value Channel Bandwidth (MHz) Number of Resource Blocks Number of Occupied Sub-Carriers FFT Size Sub-Carrier Spacing Af (kHz) 15 (7.5) Sampling Rate (MHz) 15.36 23.04 30.72 Samples per Slot 11520 15360 CP Size (us) Normal CP (Af = 15 kHz) 5.21 (first symbol of the slot) 4.69 (other symbols of the slot) 7 symbols/slot Extended CP (Af=15kHz) 16.67 6 symbols/slot Extended CP (Af=7.5kHz) 33.33 3 symbols/slot unpaired spectrums, two duplexing schemes are supported: frequency division duplex (allowing both full and half duplex terminal operation); as well as time division duplex. The basic transmission scheme in the 