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Method for transmitting uniformly distributed data in a mimo telecommunication system

A telecommunication system, a technology for transmitting data, applied in the direction of space transmit diversity, transmission system, digital transmission system, etc., can solve problems such as limitation and reduction of time-related diversity

Inactive Publication Date: 2006-08-09
MITSUBISHI ELECTRIC CORP
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  • Description
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  • Application Information

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Problems solved by technology

[0008] Current interleaving techniques are not capable of maximizing the use of the diversity provided by the MIMO system theory, since the consecutive bit sequences transmitted by known interleavers and to be transmitted during the same symbol period usually comprise bits that are adjacent to each other in the original coded bit stream, This reduces the time-dependent diversity of the data sent to the receiver and in turn limits the performance of the space-time decoder included in the receiver

Method used

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  • Method for transmitting uniformly distributed data in a mimo telecommunication system
  • Method for transmitting uniformly distributed data in a mimo telecommunication system
  • Method for transmitting uniformly distributed data in a mimo telecommunication system

Examples

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Embodiment Construction

[0058] figure 1 Diagrammatically shows a telecommunication system comprising at least one transmitter TR and one receiver REC, which will be transmitted by a predetermined integer number Nt of transmitting antennas (ta1, ta2 ... taNt) and a predetermined integer number Nr of receiving antennas (ra1, ra2 ...raNr) to exchange signals with multiple communication channels CHNL established between.

[0059] The transmitter TR shown in the example described here comprises a channel encoder CHENC that applies a coding to the uncoded data bits Uncb, for example by convolutional codes or turbo codes, to provide a binary stream of coded data bits Tb to be transmitted . The transmitter TR comprises an interleaving means INTL for generating permutation bits Pb, this interleaving is useful for later processing on the receiver side as it will allow to obtain uncorrelated data. The permuted bits Pb are divided into sequences of M.Nt bits each, and then the plurality of bit sequences are ma...

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Abstract

To provide a data transmission method using Nt transmission antennas over a communications channel provided with Ni inputs as its feature. This method includes a bit-interleave step. The bit-interleave step has bit multiple separation DMXS, sequence-interleave SRIS, sequence storage / segmentation, segment sorting SPS, and sequence allocation ALS to form groups G1 and G2 for Nt sorted bit sequences Psqj for the purpose of transmission performed for all transmission antennas through Nt channels allocated to the same bit rank. Thereby, a basically uniformized distribution for encoded data bits is secured extending over different channel inputs, so that the method becomes suitable for data diversity.

Description

technical field [0001] The invention relates to a method of transmitting data in a telecommunication system comprising at least one transmitter with a plurality of transmit antennas and at least one receiver with at least one receive antenna, the method comprising a method for generating coded data bits a bit encoding step, a bit interleaving step for permuting said coded data bits, and a modulating step for generating symbols representing the permuted bits, each symbol being represented by a predetermined number of bits to be transmitted between the transmitting and receiving antennas Transmit on the established communication channel. Background technique [0002] Telecommunications systems that use multiple antennas at the receiver and / or transmitter side of a radio link are known as Multiple-Input Multiple-Output systems (also known as MIMO systems). MIMO systems have been shown to provide a large transmission capacity compared to that provided by a single antenna system...

Claims

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Application Information

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IPC IPC(8): H04B7/06H04B7/08H04J99/00
CPCH04L1/0625H04L47/10H04L47/125H04L1/0071H04L47/43
Inventor L·布吕内尔N·格雷塞J·鲍卓斯
Owner MITSUBISHI ELECTRIC CORP
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