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Method and apparatus for determining a shuffling pattern in a double space-time transmit diversity system

A transmit diversity and mode technology, applied in space transmit diversity, diversity/multi-antenna systems, transmission systems, etc., can solve problems such as unconsidered impact

Inactive Publication Date: 2005-02-16
SAMSUNG ELECTRONICS CO LTD +1
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Problems solved by technology

[0012] However, conventional DSTTD systems select a shuffling pattern based only on information that minimizes the spatial correlation between channels transmitting data streams, and do not take into account the SNR (signal-to-noise ratio) versus BER (bit error rate)
In addition, considering that the correlation matrix is ​​obtained by two-dimensional calculations instead of one-dimensional calculations from the channel matrix, there is a limitation in this shuffling mode that only uses the correlation matrix estimation to optimize the reception performance

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[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, existing functions and constructions will not be described in detail since they would obscure the invention in unnecessary detail.

[0028] The invention described below relates to a method of determining a shuffling pattern that maximizes the minimum received signal-to-noise ratio, minimum received signal-to-noise ratio versus BER characteristic, based on channel estimation information at a receiver of a DSTTD system supporting shuffling will have a direct impact.

[0029] image 3 For a transmitter block diagram of a DSTTD system supporting shuffling according to an embodiment of the present invention, refer to image 3 , a demultiplexer (DEMUX) 110 divides a series of data streams containing multiple modulated data symbols into two different data streams and inpu...

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Abstract

A method and apparatus for determining a shuffling pattern in a DSTTD. In the apparatus, a channel estimator estimates channel characteristics from a plurality of transmit antennas to a plurality of receive antennas. A shuffling pattern selector calculates a minimum receive SNR for each of all available shuffling patterns, and selects a shuffling pattern having the largest minimum receive SNR as the optimum shuffling pattern. This efficient shuffling pattern selection directly improves BER performance at a receiver.

Description

technical field [0001] The present invention mainly relates to a dual space-time transmission diversity (DSTTD) system, in particular to a method and a device for selecting a shuffling mode in the DSTTD system for shuffling and transmitting data streams. Background technique [0002] With the rapid growth of the wireless communication market and the increasing demands of various multimedia services in the wireless environment, various methods of transmitting large amounts of data at a relatively high rate are constantly being explored and studied. Therefore, the full use of limited frequency resources has become a top priority. A new transmission scheme using multi-antenna technology came into being. The standardization working group of 3G mobile communication system, 3GPP (3rdGeneration Partnership Project) is actively using MIMO (Multiple Input and Multiple Output) technology, that is, in the mobile communication environment through Set up multiple transmit / receive antenn...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04B7/02H04B7/04H04B7/06H04B7/08H04B7/26H04J99/00H04L1/06
CPCH04B7/0697H04B7/0691H04B7/0673H04B7/0417H04B7/082H04B7/0634H04B7/061H04L1/0618H04B7/06
Inventor 申熙浚郑在学黄讃洙李忠容
Owner SAMSUNG ELECTRONICS CO LTD
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