NGB-W-based multi-antenna multiplex transmission system

The invention provides an NGB-W-based multi-antenna multiplex transmission system. The NGB-W-based multi-antenna multiplex transmission system comprises a sending device and a receiving device, wherein the sending device comprises a dual-antenna mapping module, a precoding processing module, a time interleaving module, a framing module, a frequency domain interleaving module and an OFDM symbol generation module; the receiving module comprises an OFDM demodulation module, a channel estimation module, a multi-antenna channel matrix processing module, a frequency domain solution interleaving module, a frame extraction module, a time solution interleaving module, a multi-antenna demodulation module and a multi-antenna solution mapping module. NGB-W system transmission signals are subjected to precoding processing comprising constant precoding matrix and phase jump matrix processing, the performance gains under broadcasting system related channel transmission can be improved, and the problem that an NGB-W system broadcast can not obtain a higher transmission rate in the prior art is solved.