| 摘要 |
<p>This invention provides a method for executing open loop space multiplexing by pre-coding de-correlation. H is a channel transmission matrix of a MIMO (multiple input multiple output) system, and the value of matrix det(H/H) is made to be maximal to permit realizing the maximal capability of an open loop space multiplexing system. The signal strength of each layer of the MIMO system is made to be equal and orthogonal to each other, that is, the channel transmission matrix of MIMO is an orthogonal and diagonal matrix. In pre-coding MIMO, the equivalent MIMO channel corresponding to a specific pre-coding matrix E can be rebuilt by applying HE=HE. The pre-coding technology can reduce the influence of channel correlation in space multiplexing system to the most degree, and the UE(user equipment) can use de-multiplexing very well and detect signal, and this largely improves the transmission quality of E-MBMS service. In addition, no any additional complexity is imported, and the method is applicable to open loop MIMO in MBSFN.</p> |
