Multiple-input multiple-output method and device

Abstract

The invention discloses a multiple-input multiple-output method and a device. The method comprises the steps of: respectively generating a wave beam figuration weight corresponding to each user, respectively generating a reference wave beam figuration weight corresponding to each auxiliary scheduling user according a predetermined regulation, wherein the reference wave beam figuration weight is vertical to a signal space of a main scheduling user and the figuration gain is maximum, determining a channel quality indication corresponding to the auxiliary scheduling user according to the reference wave beam figuration weight corresponding to each auxiliary scheduling user, determining once transmission throughput of the auxiliary scheduling user according to the determined channel quality indication, choosing a reference auxiliary scheduling user to perform second order space division multiplexing with the main scheduling user from the auxiliary scheduling users, and in the event of meeting the preset conditions, performing space division multiplexing on the reference auxiliary scheduling user and the main scheduling user according to the reference wave beam figuration weight of the auxiliary scheduling user and the wave beam figuration weight of the main scheduling user. The throughout in district and the system frequency spectrum efficiency are promoted.

Description

technical field [0001] The present invention relates to the communication field, in particular to a multiple-input multiple-output method and device. Background technique [0002] Multiple Input Multiple Output (MIMO for short) technology is characterized in that both the wireless transmitter and receiver introduce multiple antennas. Compared with the traditional single input single output system, the MIMO system uses space diversity technology or space multiplex Use technology to obtain a great increase in system capacity. [0003] The concept of the traditional Single User-MIMO (Single User-MIMO, referred to as SU-MIMO) can be further extended, that is, when the antennas of multiple user terminals jointly form multiple receiving or transmitting antennas, SU-MIMO is extended to multi-user MIMO ( MultipleUser-MIMO, referred to as MU-MIMO) architecture. [0004] During the transmission process of the downlink high-speed data shared channel of the TDSCDMA third-generation mo...

AI Technical Summary

Problems solved by technology

Since the weights of different UEs are independently generated according to their own spatial characteristics, direct use of these weights for MU-MIMO multi-stream transmission will inevitably lead to inter-user interference, which will eventually affect the throughput.

However, selecting users with better transmit signal orthogonality for MU-MIMO will greatly reduce the application probability of MU-MIMO, and is not conducive to the further improvement of cell throughput.

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