Multi-antenna diversity combination receiving method and device

Abstract

The invention discloses a multi-antenna diversity combination receiving method and a device. The method is characterized in that the diversity combination step is carried out in the associated detection in advance, that is to say that diversity combination is carried out after completing matched filtering of each antenna data and calculating the channel correlation matrix corresponding to each antenna in associated detection process; and decomposition and linear equation resolving are carried out according to the combined channel correlation matrix and the combined matched filtering result to obtain a sign to be demodulated, thereby obviating the operations of decomposition and linear equation resolving for each antenna according to the matched filtering result and the channel correlation matrix of each antenna. The multi-antenna diversity combination receiving method provided by the embodiment has better diversity gain in comparison with single antenna receiving, and can remarkably reduce the calculation amount and the realization complexity of the system in comparison with the existing diversity combination receiving system under the condition of same diversity gain performance.

Description

technical field [0001] The present invention relates to a data receiving technology, in particular to a multi-antenna diversity combination receiving technology. Background technique [0002] With the development of wireless communication technology and the rise of 3G in the world. For the Time Division Synchronous Code Division Multiple Access (TD-SCDMA) system, one of the mainstream standards of 3G, as the number of users continues to increase, the load in the cell increases, resulting in increased interference between users, which affects the receiving performance of the terminal. put forward higher requirements. At the same time, with the continuous evolution of the TD-SCDMA standard, high-order modulation technologies such as 16 quadrature amplitude modulation (Quadrature Amplitude Modulation, "QAM") and 64QAM are introduced to increase the data transmission rate. However, with the introduction of high-order modulation, the performance requirements for terminal receiv...

AI Technical Summary

Problems solved by technology

Before merging, N channels of data are processed independently, and channel estimation, joint detection (matched filtering, generation of channel correlation matrix, Cholesky decomposition, linear equation solution), and demodulation are performed separately. The calculation amount and complexity are N times that of the single antenna system. The incremental amount of calculation and complexity brought about is huge

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