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Space-time coding method, wireless signal transmitting, receiving and decoding method and wireless signal transmitting, receiving and decoding device

A technology of space-time coding and coding matrix, which is applied in the direction of preventing/detecting errors through diversity reception, digital transmission systems, and preventing errors, etc.

Inactive Publication Date: 2010-06-09
NTT DOCOMO INC
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  • Abstract
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Problems solved by technology

So far, whether it is STBC or STTC, the problem of coding design for a large number of transmitting antennas is still a difficult point

Method used

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  • Space-time coding method, wireless signal transmitting, receiving and decoding method and wireless signal transmitting, receiving and decoding device
  • Space-time coding method, wireless signal transmitting, receiving and decoding method and wireless signal transmitting, receiving and decoding device
  • Space-time coding method, wireless signal transmitting, receiving and decoding method and wireless signal transmitting, receiving and decoding device

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Embodiment Construction

[0055] The present invention proposes a special space-time coding structure, which can achieve a good balance between diversity gain and multiplexing gain, and is conducive to correct decoding and reception at the receiving end, thereby enabling the MIMO communication system to achieve Higher spectral efficiency and better transmission reliability. The present invention will be further described through specific embodiments below in conjunction with the accompanying drawings.

[0056] This embodiment first provides a space-time coding method, such as figure 1 As shown, the method includes:

[0057] Step 10, at the transmitting end, perform serial-to-parallel conversion on the symbols in the serial code stream in groups of m symbols to obtain m parallel code streams, where m=(2×Nt-1), Nt≥2, Nt is the number of transmit antennas.

[0058] In the above steps, the serial code stream may be composed of coded and modulated symbols of the data to be transmitted, and the specific m...

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Abstract

The invention provides a space-time coding method, a wireless signal transmitting, receiving and decoding method and a wireless signal transmitting, receiving and decoding device. The space-time coding method comprises the following steps: at a transmitting end, deserializing symbols in a serial code stream in a way of taking m symbols as a group to acquire m parallel code streams, wherein m is equal to (2*Nt-1), and Nt is greater than or equal to 2 and is the number of transmitting antennae; and forming an Nt*Nt coding matrix according to the m symbols, wherein the symbols in the m symbols belonging to a first parallel code stream are repeated for Nt times at positions of different columns and different rows of the code matrix, and the symbols in the m symbols belonging to 2ath and (2a+1)th parallel code streams are repeated for (Nt-a) times at the positions of the different columns and different rows of the code matrix respectively. The space-time coding method, and the wireless signal transmitting, receiving and decoding method and the wireless signal transmitting, receiving and decoding device can achieve higher spectrum efficiency and better transmission reliability.

Description

technical field [0001] The present invention relates to the technical field of wireless multi-antenna communication, in particular to a space-time encoding method, a method and a device for transmitting, receiving and decoding wireless signals. Background technique [0002] With the popularity of Ethernet (Internet) and multimedia services, more and more applications require high-speed wireless access. Because wireless transmission is affected by signal fading and interference, in order to achieve high data rates and high quality of service, new technologies are required to increase spectral efficiency and improve link reliability. Multiple Input Multiple Output (MIMO, Multiple Input Multiple Output) technology, which uses multiple antennas for data transmission at the transmitter and receiver, can double the spectrum utilization without increasing the bandwidth and antenna transmission power, thereby becoming a Double the wireless channel capacity. [0003] Space-Time Cod...

Claims

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Application Information

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IPC IPC(8): H04L1/06H04L1/00
Inventor 戴晓明白勇佘小明陈岚
Owner NTT DOCOMO INC
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