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Method and device of sending bit data

A bit data, bit technology, applied in space transmit diversity, diversity/multi-antenna system, error prevention/detection through diversity reception, etc., can solve the problem of not fully considering bit data anti-noise performance, bit data error randomization, etc problem, to achieve the effect of improving anti-noise performance and improving performance

Active Publication Date: 2012-06-06
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The embodiment of the present invention provides a method, system and device for sending bit data, so as to solve the problem in the prior art that the interleaving of bit data only realizes error randomization and does not fully consider the anti-noise performance of bit data

Method used

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  • Method and device of sending bit data
  • Method and device of sending bit data
  • Method and device of sending bit data

Examples

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example 1

[0066] Assume that the bit data of this simulation is b1, b2, b3, b4, b5, b6, b7, and b8 output after Turbo encoding with a code rate R of 1 / 2. Since the code rate is 1 / 2 Therefore, the information bits and parity bits are output in the form of 1:1 interleaving, that is, b1, b3, b5, and b7 are information bits, and b2, b4, b6, and b8 are parity bits. In the interleaving scheme that does not use Embodiment 1 of the present invention, the order of b1~b8 will be randomly disrupted, and then mapped to 4 QPSK modulation symbols x 1 ~x 4 , the real and imaginary parts of these four symbols will not specifically correspond to information bits or parity bits, and the anti-noise performance of information bits and parity bits is the same.

[0067] In the embodiment of the present invention, the equivalent channel correlation matrix is ​​shown in (6), and the bit channel gains of the first 4 rows are | t ...

example 2

[0070] The bit data is turbo encoded with a code rate R of 1 / 4, and the encoder outputs information bits and parity bits in the form of 1:3 interleaving, that is, b1 and b5 are information bits, b2, b3, b4, b6, b7 and b8 are parity bits. In the interleaving scheme that does not use the embodiment of the present invention, the order of b1~b8 will be randomly disrupted, and then mapped to 4 QPSK modulation symbols x 1 ~x 4 , the real and imaginary parts of these four symbols will not specifically correspond to information bits or parity bits.

[0071] Utilize the equivalent signal term of embodiment one design for:

[0072]

[0073] x 1 R ~x 4 R The bit-channel gain with while x 1 I ~x 4 I has a bit-channel gain of | t 2 | 2 | a | ...

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Abstract

The invention discloses a method of sending bit data, comprises the following steps: distributing the priority for bit data to be sent and confirming bit channel gain of each channel according to correlation matrixes of current homotactic channels; adjusting the marshalling sequence of the bit data according to the priority and the bit channel gain, wherein the bit data with high priority corresponds to the channel with larger bit channel gain; and respectively sending bit data with adjusted marshalling sequence according to the corresponding channels. The invention makes important bit data have higher bit channel gain, enhances the noise-immune performance of a bit data and improves the performance of the whole system. The invention also discloses a device of sending bit data.

Description

technical field [0001] The present invention relates to data transmission technology in the communication field, and in particular to a method and device for transmitting bit data in a Multiple Input Output (Multi Input Multi Output, MIMO) system. Background technique [0002] MIMO technology is an important technology in modern communication technology. Through MIMO technology, multiple antennas can be installed at the transmitting end and receiving end of the communication system, and the capacity and reliability of the system can be improved by using independent multipath fading between antennas. The workflow of the existing MIMO technology at the sending end is: [0003] 1. Perform channel coding on the source bit data. [0004] 2. Interleave the coded bit data. [0005] 3. Modulating the interleaved bit data. [0006] 4. Perform space-time coding on the modulated symbols by using a space-time coding matrix, and send. [0007] The purpose of interleaving the encoded ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04B7/04
Inventor 赵慧旷婧华王文博韩璐
Owner CHINA MOBILE COMM GRP CO LTD