Multichannel data stream transmission method based on minimum distance maximization criterion

A data stream transmission and data stream technology, applied in diversity/multi-antenna systems, space transmit diversity, etc., can solve problems such as inability to support arbitrary dimensional data stream transmission, difficult engineering application of actual communication systems, and high computational complexity of model parameters

Inactive Publication Date: 2013-10-02
UNIV OF SCI & TECH OF CHINA
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Problems solved by technology

[0003] The purpose of the present invention is to propose a multi-channel data stream transmission method based on the minimum distance maximization criterion to improve the model parameter calculation complexity in the existing minimum distance precoding method, which cannot support arbitrary dimensional data stream transmission, and is difficult Problems of Engineering Applied to Practical Communication Systems

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  • Multichannel data stream transmission method based on minimum distance maximization criterion
  • Multichannel data stream transmission method based on minimum distance maximization criterion
  • Multichannel data stream transmission method based on minimum distance maximization criterion

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Embodiment 1

[0018] In this embodiment, taking the QPSK modulation mode adopted by the sending end as an example, the operation process of adopting the multi-channel data stream transmission method based on the minimum distance maximization criterion of the present invention is described in detail.

[0019] In this embodiment, it is assumed that the MIMO communication system adopts QPSK modulation at the transmitting end to transmit the number of data streams M=4 data streams, so that the data transmission power P 0 =1. The implementation of the known equivalent virtual channel matrix H at the sending end is

[0020] H = 0.1168 - 0.9194 i - 0.1402 - 1.3011 i - 0.7565 ...

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Abstract

The invention discloses a multichannel data stream transmission method based on a minimum distance maximization criterion, which is characterized by comprising the steps of designing minimum distance precoding matrixes of a full rank, a rank defect and a rank 1 which can transmit any data streams with a sphere filling lattice theory and a recursive construction thought respectively, and each specific channel achieves that the quantity of candidate precoding matrixes is the same as that of the data streams to be transmitted. Compared with the available relevant design method, the method is higher in universality, lower in error rate performance, concise in construction procedure and lower in engineering achievement cost, and facilitates real-time implementation in new generation broadband wireless and mobile communication systems such as 802.11n, TD-HSPA+ (Time Division-High Speed Packet Access+), TD-LTE (Time Division-Long Term Evolution) and TD-LTE-Advanced.

Description

technical field [0001] The invention belongs to the technical field of multiple-input multiple-output (MIMO) broadband wireless and mobile communication signal processing, and specifically relates to a linear precoding method based on the minimum distance maximization criterion in a MIMO wireless communication system, which is applicable to such as 802.11n, TD-HSPA+, TD -New generation broadband wireless and mobile communication systems such as LTE and TD-LTE-Advanced. Background technique [0002] In many broadband wireless and mobile applications, the sender can usually fully obtain the channel state information of a specific user by using an error-free feedback link, especially for broadband mobile communication systems based on time division duplex (TDD), the situation will become more complex. For the sake of simplicity, at this time, the sending end can effectively obtain all channel state information of the user only through the principle of channel reciprocity. MIMO...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04B7/08
Inventor 许小东陈志勇
Owner UNIV OF SCI & TECH OF CHINA
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