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Method for transmitting a space frequency encoded data signal via multiple transmitting entities

一种数据信号、实体的技术，应用在电信领域

Active Publication Date: 2016-06-01
3G LICENSING SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Space-time decoding in the receiver is then no longer possible

Method used

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  • Method for transmitting a space frequency encoded data signal via multiple transmitting entities
  • Method for transmitting a space frequency encoded data signal via multiple transmitting entities
  • Method for transmitting a space frequency encoded data signal via multiple transmitting entities

Examples

Experimental program
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Embodiment Construction

[0047] To clarify the definitions, the following paragraphs serve as a reminder of the principles of co-located transmitter entities in a MISO telecommunication network for transmitting signals and orthogonal copies.

[0048] Orthogonal replicas are generated by applying a space-time code to the series of symbols to be transmitted. These codes make it possible to take full advantage of the spatial and temporal diversity obtained by transmitting signals and orthogonal copies.

[0049] In the case of two co-located transmitter entities, Alamouti codes are often employed. Therefore, according to a series of symbols to be sent S={s 0 ,s 1 ,s 2 ,s 3 ,...s 2k ,s 2k+1 ,...} to generate symbol string S ortho , making

[0050] S ortho ={-s 1 *,s 0 *,-s 3 *,s 2 *...-s 2k+1 *,s 2k *,...},

[0051] where * indicates complex conjugation.

[0052] In an equivalent manner, by adding the matrix codeword C Alamouti Applied to consecutive pairs from the symbol string S to be t...

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PUM

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Abstract

The invention relates to a method for transmitting a data signal comprising a sequence of symbols to a receiver, said method comprising generating a plurality of OFDM signals respectively transmitted by a plurality of transmitting entities (EEi). The method includes the following steps: generating a sequence of multiple symbol pairs, which includes the following sub-steps: generating at least one symbol pair that is orthogonal to an existing symbol pair of the symbol sequence; by copying the element pair to generate at least one symbol pair; and allocating at least one existing pair, at least one orthogonal symbol pair, and at least one replicated symbol pair to a transmission entity of the plurality of transmission entities, for the code Repeat the sub-steps for all symbol pairs in the symbol sequence; generate the plurality of OFDM signals according to the sequence of the plurality of symbol pairs, the OFDM signal including a plurality of subcarriers equal to twice the number of transmitting entities .

Description

technical field [0001] The field of the invention is that of telecommunications. The invention more particularly relates to the transmission of data signals from a plurality of transmitter entities to at least one receiver. Background technique [0002] The signal sent by the transmitter entity is subject to distortion as a function of propagation conditions, and in particular the power of the signal received by the receiver varies in time and space. In a radio telecommunication network, a transmitter entity is eg a radio transmitter comprising a transmitter antenna, a radio base station, or a fixed or mobile radio relay station comprising means for transmitting signals from a radio base station. The transmitter entity may likewise be a signal transmitter using acoustic means in the subsea medium or a transmitter for a fixed telecommunication network such as a fiber optic network or a copper wire network. [0003] In order to improve the quality of the signal received by t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04B7/02H04B7/06H04L5/00H04L1/00H04L27/26H04L25/02H04L25/03
CPCH04B7/022H04B7/0669H04L1/0026H04L1/0606H04L1/0625H04L1/0668H04L1/0687H04L5/0023H04L5/0032H04L5/0046H04L5/006H04L25/022H04L2001/0092H04L2025/03426H04L2025/03605
Inventor T.克莱西恩A.奥斯曼
Owner 3G LICENSING SA