Cooperative diversity system beamforming method and device

A cooperative diversity and beamforming technology, applied in the field of communication, can solve the problems of reduced system performance, single relay protocol, limited number of upper antennas, etc., so as to solve the problem of low capacity and improve system capacity.

Active Publication Date: 2011-11-30
ZTE CORP
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Problems solved by technology

[0004] However, generally speaking, the capacity of the current cooperative diversity system is not high, and there are various problems at the same time:
[0005] (1) In the cooperative diversity system, each user can only send information from the quadrature and in-phase components of the PSK modulation system, so only BPSK modulation can be used
[0006] (2) The number of antennas on the base station (BS) and user end (UE) in the cooperative diversity system is limited
[0007] (3) Single relay protocol in cooperative diversity system
[0008] (4) Traditional AF (Amplify-And-Forward, amplify and forward) protocol, DF (Decode-And-Forward, decode and forward) protocol, SDF (Selection Decode and Forward, select decode and forward) protocol in cooperative diversity system cause system performance to degrade

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  • Cooperative diversity system beamforming method and device
  • Cooperative diversity system beamforming method and device
  • Cooperative diversity system beamforming method and device

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Embodiment Construction

[0030] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0031] figure 1It is a flowchart of a beamforming method for a cooperative diversity system according to an embodiment of the present invention. Such as figure 1 As shown, the beamforming method of the cooperative diversity system according to the embodiment of the present invention includes:

[0032] Step S102, dividing a TDMA frame into three subframes, and two UEs share one subframe for information transmission;

[0033] Step S104, determine the signals received and sent by the three subframes of a TDMA frame according to the relay protocol;

[0034] Step S106, jointly process the signals received in different subframes according to the equivalent channel model to determine the final received ...

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Abstract

The invention discloses a cooperative diversity system beamforming method and device. The method includes: dividing a TDMA frame into three subframes, and two user terminals share one subframe for information transmission; determining a TDMA frame according to a relay protocol Signals received and transmitted in three subframes; signals received in different subframes are jointly processed according to the equivalent channel model to determine the final received and transmitted signals; and beamforming of the cooperative diversity system at the user end is completed according to the final received and transmitted signals. Through the technical scheme provided by the invention, the problem of low capacity of the existing cooperative diversity system is solved, and the effect of improving the system capacity is achieved.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a beamforming method and device for a cooperative diversity system. Background technique [0002] In the next-generation broadband wireless communication network, how to support a larger bandwidth in the wireless communication network under the bandwidth of the current wireless communication system becomes a key factor in improving the throughput of user terminals between cells and the average throughput of user terminals. Facing severe challenges. [0003] In wireless communication, transmit diversity is an effective technique against multipath fading. However, due to limitations in power, size, cost, and hardware complexity, wireless terminals may only use a single antenna. Therefore, cooperative diversity technology emerges as the times require, and its main idea is to allow multiple single-antenna terminals to form a virtual multi-antenna array to obtain transmit diversit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/08H04L1/06H04L1/16
Inventor 魏巍卢忱
Owner ZTE CORP
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