Patent ID: 8139529

Claim:
A method for a single frequency network (SFN) based on a TD-SCDMA network, the method comprising: dividing the TD-SCDMA network into two layers: one layer for a mobile communication network, and the other layer for a TD-SCDMA single frequency network (SFN), wherein the TD-SCDMA SFN is independent from the mobile communication network in which some frequency resources are reserved for the SFN only, or a partial timeslot resources are used for the mobile communication network, and the rest of the timeslot is used for the SFN service; performing channel estimation; and thereafter, performing signal detection using an equalization algorithm, wherein the equalization detection algorithm includes time equalizing and frequency equalizing, wherein performing signal detection further comprising: sending received data to a data splitting unit where user data and midamble data are separated; sending the midamble data to a channel estimation unit for channel response estimation; sending the user data together with the estimated channel to a channel equalizer unit for equalization; sending output data from the channel equalizer to a de-scrambling unit for chip-level de-scrambling; sending chip de-scrambled data to a de-spreading unit for de-spreading; soft de-modulating de-spread data in a soft demodulation unit to obtain soft bits; and further processing the soft bits for decoding and service recovering.