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Data transmitting method, data transmitting device and data communication system

A data transmission and signal technology, applied in baseband system components, shaping network in transmitter/receiver, preventing/detecting errors through diversity reception, etc., can solve problems such as not considering HARQ transmission scheme, and achieve signal reduction Interference between streams, effect of reducing interference

Active Publication Date: 2010-03-10
SHANGHAI HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0055] The inventor found in the research that the current quasi-orthogonal diversity coding technology does not consider the HARQ transmission scheme when the space diversity and space multiplexing are mixed.

Method used

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  • Data transmitting method, data transmitting device and data communication system
  • Data transmitting method, data transmitting device and data communication system
  • Data transmitting method, data transmitting device and data communication system

Examples

Experimental program
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Embodiment 1

[0070] Embodiment 1 of the data transmission method provided by the present invention is as follows:

[0071] include:

[0072] In the first transmission period, the source signal is transmitted at least twice in a combination of space diversity and space multiplexing, and the channel experienced by the source signal is expressed in the form of a quasi-orthogonal diversity matrix. It should be noted that the channel experienced by the source signal Another representation of the matrix form expressed as quasi-orthogonal diversity is: the product of the channel matrix and the source signal in the form of quasi-orthogonal diversity at the receiving end. Embodiments of the present invention are described in the second form of expression.

[0073] For example, assume that each emitted signal s n for the following symbols (s 1 ,s 2 ,...,s k ), the combination includes exchanging the order of the transmitted symbols, taking the conjugate, taking the negative sign, etc. The comb...

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Abstract

The invention discloses a data transmitting method, a data transmitting device and a data communication system. The method combines the quasi-orthogonal diversity coding technology and hybrid automatic repeat request technology, thereby effectively improving the combination performance in hybrid automatic repeat. The method mainly comprises: transmitting source signals by combining spatial diversity and spatial multiplexing at least twice in the first transmission period, wherein the channel for transmitting the source signals is represented in a matrix form of quasi-orthogonal diversity. Through the method, the quasi-orthogonal diversity coding technology and the automatic repeat request in the mixed use of the spatial diversity and spatial multiplexing can be designed to be combined to reduce the interference among the signal flows.

Description

technical field [0001] The invention relates to mobile communication technology, in particular to a data transmitting method, a data transmitting device and a data communication system. Background technique [0002] With the development of mobile communication technology, various transmit diversity technologies have been developed at present, and Hybrid Automatic Repeat Request (HARQ: Hybrid Automatic Repeat Request) technology is widely used as a typical application of time diversity technology. At the same time, in 3G and future 4G wireless communication systems, multiple input multiple output (Multiple input Multiple Output, multiple input multiple output) technology has gradually been applied. The main feature of the multiple-input multiple-output technology is that the data transmitting device transmits multiple data streams simultaneously by multiple antennas, and the data receiving device transmits multiple data streams simultaneously. Square error (L-MMSE: Linear Mi...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04L1/18H04L25/03
Inventor 吴涛赵印伟李琦
Owner SHANGHAI HUAWEI TECH CO LTD
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