Broadcast multicast mode
A broadcast/multicast transmission format includes a data portion and a cyclic prefix (CP) coupled to the traffic data portion. A method and system for providing broadcast/multicast transmissions with the application to communication systems that perform broadcast or multicast transmission is also disclosed. The addition of a pilot to the data portion of the transmissions is also disclosed.
1. A method, comprising:
receiving a broadcast/multicast transmission;
performing fast fourier transformation (FFT) on a signal within the broadcast/multicast transmission;
normalizing the transformed signal;
performing inverse fast fourier transformation (IFFT) on the normalized transformed signal; and
demodulating the inverse fast fourier transformed normalized signal.
2. The method of claim 1 , wherein the demodulation of the inverse fast fourier transformed normalized signal is performed by a quadrature phase shift keying (QPSK)/16 quadrature amplitude modulation.
3. The method of claim 1 , further including:
extracting data fields from the demodulated signal;
extracting a pilot signal from the data fields;
performing channel estimation using the extracted pilot signal; and
removing any cyclic prefix (CP) associated with the data fields.