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Signal transmission method and system of multiple-input-multiple-output system

A signal transmission, multi-output technology, applied in diversity/multi-antenna system, space transmit diversity, advanced technology and other directions, can solve problems such as poor anti-fading performance

Inactive Publication Date: 2008-03-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since hierarchical space-time coding does not take advantage of the transmit diversity of multi-antenna systems, its anti-fading performance is poor

Method used

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  • Signal transmission method and system of multiple-input-multiple-output system
  • Signal transmission method and system of multiple-input-multiple-output system
  • Signal transmission method and system of multiple-input-multiple-output system

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Embodiment Construction

[0030] The present invention proposes a signal transmission method and a signal transmission system in a multiple-input multiple-output system, the core idea of ​​which is: the transmitting end includes the spatial channel response matrix and the reception of each sub-signal stream according to the channel state information fed back by the receiving end The signal-to-interference-noise ratio can adaptively select the spatial channel coding matrix used when transmitting the signal and the transmitting antenna of each sub-signal stream, so as to send the signal to the receiving end. The present invention effectively utilizes the state parameters of the feedback channel to adjust the spatial channel coding matrix of the transmitting end, and has the functions of flexibly selecting the coding matrix, effectively utilizing the transmitting power and improving the receiving performance compared with the prior art.

[0031] Please refer to Fig. 3, which is a flow chart of the signal t...

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Abstract

The utility model discloses a signal emission method and system for the multi-input multi-output system. The method comprises the steps as below: based on the channel state information feed backed by the receiving terminal, including spatial channel response matrix and signal to interference and noise ratio of respective sub-signal flow, the transmitting terminal can select the spatial channel encoding matrix adopted by the outgoing signal and the radiator of each sub-signal flow, so as to send the signals to the receiving terminal which examines and decodes the received signals. Thus, the spatial channel status information can be obtained and the signal to interference and noise ratio of the spatial channel response matrix and relevant sub-signal flow can be feed backed to the transmitting terminal. The system comprises a transmitting terminal and a receiving terminal. The utility model uses the transmitting power more effectively and improves the decoding capability of the receiving terminal. Also, more capacity can be obtained.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to a signal transmitting method and a signal transmitting system in a MIMO (multiple-input multiple-output, multiple-input multiple-output) system. Background technique [0002] According to information theory, the MIMO system can double the system capacity without increasing the bandwidth, and can use the independent multipath transmission fading between each antenna to improve the frequency band utilization. As one of the key technologies of MIMO systems, space-time coding is a technology for joint signal processing in space and time, which can simultaneously obtain diversity gain, coding gain and high spectrum utilization. [0003] Using space-time coding is a feasible and effective method to achieve or approach the capacity of MIMO wireless channel. Space-time coding is a coding technique for multiple transmitting antennas, which can generate spatial and time-domain ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/06H04B7/04
CPCY02D30/70
Inventor 刘敏刘巧艳余秋星
Owner ZTE CORP