| 摘要 |
<p>A method for generating a downlink baseband signal, and a related device and system. The method for generating a downlink baseband signal comprises: performing channel coding and modulation processing on a downlink data stream of a cell user, so as to obtain a downlink user coding modulation signal of the cell; generating, according to physical layer control information, a downlink control channel signal; and exchanging a reference signal, a synchronization signal, a broadcast channel signal, the downlink user coding modulation signal and the downlink control channel signal to a corresponding RRU, so that the corresponding RRU performs MIMO pre-coding processing on the downlink user coding modulation signal, and mapping the signal after the MIMO pre-coding processing, the downlink control channel signal, the reference signal, the synchronization signal, and the broadcast channel signal onto corresponding sub-carriers respectively, and performing IFFT transformation processing, so as to obtain a downlink baseband signal and send the downlink baseband signal out. The embodiments of the present invention can reduce the bandwidth of signal transmission between a C-RAN node and an RRU.</p> |
