Читать книгу Spatial Multidimensional Cooperative Transmission Theories And Key Technologies - Lin Bai - Страница 24

The received signal combination is a technology for combining multiple received signal values, and it is particularly significant in attenuating signal fading in the processing of wireless communication matrix signals. By providing multiple receiving antennas at the receiving end of the wireless communication system, better signal receiving performance can be obtained. This section assumes that multiple antennas at the receiving end can be equivalently replaced, and each receiving antenna can be regarded as a receiving device corresponding to a specific wireless channel. Since multiple receiving antennas can obtain multiple received signals, in order to obtain a larger signal gain, we need to properly combine the multiple received signals. In this section, we will consider the statistical characteristics of background noise on the basis of the statistics and certainty of the signals, and then combine the received signals.

Among the various signal combination technologies currently in existence, the technology that is easiest to implement is the linear signal combination technology, which is also the focus of our research.