Data transmission method and device

A data transmission method, an integer technology, applied in the field of communication, can solve the problem that the sending and receiving performance of the data transmission method cannot meet people's needs, etc.

Active Publication Date: 2017-05-24
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, with the rapid development of wireless communication technology, people's demand for improvement in transceiver performance is further increased, and the transceiver performance of existing data transmission methods cannot meet people's needs.

Method used

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Embodiment Construction

[0080] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0081]The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of practice in sequences other than ...

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Abstract

An embodiment of the invention provides a data transmission method and a data transmission device. The data transmission method comprises the steps of: modulating information bits to be transmitted according to a lower-order constellation diagram to generate 4m lower-order modulation symbols; multiplying a precoding matrix Q with column vectors formed by the 4m lower-order modulation symbols to obtain 4m higher-order modulation symbols to be transmitted corresponding to a higher-order constellation diagram; and transmitting the 4m higher-order modulation symbols to be transmitted on different corresponding carriers of two antennas separately. The higher-order modulation symbols to be transmitted contain a part of or all of the information bits to be transmitted, and therefore, the same signal can be simultaneously transmitted on different carriers of a plurality of antennas, thereby achieving frequency diversity and space diversity, and accordingly improving the transmission and receiving performance of data transmission.

Description

technical field [0001] Embodiments of the present invention relate to communication technologies, and in particular to a data transmission method and device. Background technique [0002] Dual Carrier Modulation (DCM for short) is a technology that utilizes frequency diversity to improve transceiver performance. [0003] Frequency diversity is to transmit a signal at the sending end using two sending frequencies with a large interval at the same time, and synthesize the two radio frequency signals at the receiving end at the same time. Due to the different operating frequencies, the correlation between electromagnetic waves is extremely small. The fading probability of each electromagnetic wave is also different. Therefore, frequency diversity is particularly effective against frequency selective fading and can improve the performance of transmission and reception. For example: suppose the signal to be sent is s 1 and s 2 , will s 1 and s 2 Combined to generate signal x...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08H04B7/12H04L25/03H04L27/26
CPCH04B7/0802H04B7/12H04L25/03891H04L27/2627H04L27/26265H04B7/08H04L1/0606H04L25/03898H04L27/34H04B7/0615H04B7/068H04L27/36H04B7/0456H04L27/3488H04W84/12H04W72/23
Inventor 吴涛
Owner HUAWEI TECH CO LTD
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