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Data transmitting method, receiving method, device and system

A data transmission and data technology, applied in multi-frequency code system, space transmit diversity, diversity/multi-antenna system, etc., can solve the problem that the receiving diversity degree cannot be increased

Active Publication Date: 2015-12-09
SHANGHAI HUAWEI TECH CO LTD +1
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Problems solved by technology

[0009] Embodiments of the present invention provide a data transmitting method, a receiving method, a transmitting device, a data receiving device, and a multi-input multi-output orthogonal frequency division multiplexing wireless communication system, so as to solve the problem that low-complexity algorithms cannot be used in the prior art Technical Problems of Realizing Maximum Receive Diversity

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  • Data transmitting method, receiving method, device and system
  • Data transmitting method, receiving method, device and system
  • Data transmitting method, receiving method, device and system

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Embodiment Construction

[0053] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the drawings and implementations.

[0054] see figure 2 , which is a flowchart of a data transmission method provided by an embodiment of the present invention; applied to multiple-input multiple-output orthogonal frequency division multiplexing wireless communication, the method includes:

[0055] Step 201: The transmitter processes the data generated by the source to obtain the processed serial data sequence;

[0056] The transmitter performs source coding, channel coding and digital baseband modulation on the data generated by the source to obtain the modulated serial data sequence. Among them, for those skilled in the art, source coding, channel coding and digital baseband modulation are all It is a well-known technology in the art, and will...

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Abstract

The invention provides a data transmitting method, a data receiving method, a data transmitting device, a data receiving device and a system, wherein the transmitting method comprises the following steps of: processing data generated by information sources, thereby obtaining the processed serial data sequence; converting the serial data sequence into a parallel data signal sub stream according to a layered space-time coding mode, wherein the parallel data signal sub stream is in one-to-one correspondence with each transmitting antenna; framing the data of the data signal sub stream on each transmitting antenna according to certain length, thereby obtaining the corresponding data frame; carrying out frequency deviation treatment on frequency domain data in the corresponding data frame on the frequency domain; adding a protection interval in each data frame after frequency deviation processing, so that the lengths of the data frames of each transmitting antenna after the protection intervals are added are equal; carrying out orthogonal frequency division multiplexing modulation on data frames after the protection intervals are added, thereby obtaining a digital base band signal on each transmitting antenna; and modulating the digital base band signal on each transmitting antenna into a radio frequency signal, and transmitting the radio frequency signal.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a data transmitting method, a data receiving method, a transmitting device, a data receiving device, and a multi-input multi-output orthogonal frequency division multiplexing (MIMO-OFDM, MultiInputMultiOutput-OrthogonalFrequencyDivisionMultiplexing) wireless communication system . Background technique [0002] In order to solve the contradiction between the growing demand for bandwidth of wireless multimedia services and the increasingly tight spectrum resources, the multiple input multiple output (MIMO, MultiInputMultiOutput) and orthogonal frequency division multiplexing (OFDM, OrthogonalFrequencyDivisionMultiplexing) combination Orthogonal Frequency Division Multiplexing (MIMO-OFDM) technology has received extensive attention. MIMO-OFDM technology can effectively reduce the influence of delay expansion in wireless communication systems, significantly in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04B7/06H04B7/08
Inventor 邵士海易新平文荣唐友喜吕林军夏林峰
Owner SHANGHAI HUAWEI TECH CO LTD
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