DISTRIBUTED ANTENNA SYSTEM AND SIGNAL TRANSMISSION METHOD

The present disclosure relates to a distributed antenna system and a signal transmission method. A first remote end cascaded chain corresponding to a first channel set and a second remote end cascaded chain corresponding to a second channel set are obtained by means of division, such that when a distributed antenna system needs to support multi-channel MIMO, remote end units in the first remote end cascaded chain and remote end units in the second remote end cascaded chain only need to be configured with communication link modules, the number of which is less than the number of channels, and the multi-channel MIMO is jointly supported by using the remote end units in the first remote end cascaded chain and the remote end units in the second remote end cascaded chain, such that the multi-channel MIMO capability of an overlapping region can be realized, thereby reducing the device cost of the remote end units and also reducing the construction cost of the system, and facilitating the improvement of the construc