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Method and system for determining a signal vector and computer program element

A signal vector and vector technology, applied in baseband systems, transmission systems, digital transmission systems, etc., can solve problems such as increased computing costs

Inactive Publication Date: 2007-10-10
AGENCY FOR SCI TECH & RES
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Problems solved by technology

However, the computational cost increases with N t The value increases exponentially

Method used

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  • Method and system for determining a signal vector and computer program element
  • Method and system for determining a signal vector and computer program element
  • Method and system for determining a signal vector and computer program element

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Embodiment Construction

[0059] Exemplarily, a list of possible symbols for the selected component is used. The list exists for example the set of constellation symbols possible for the selected component. For each of the elements of the list, it is assumed that the selected component is actually equal to the element, and under this assumption, the remaining components are generated. For example, when it is assumed that the selected component is equal to an element in said list, the interference that this element would have caused if it were equal to the selected component is canceled from the remaining components of the received signal vector, and the remaining components of the signal vector Quantities are determined. Using some quality measure, different candidate signal vectors generated based on the assumption that the selected components are equal to the elements of the list are compared and the best one is selected as the signal vector to be determined.

[0060] A near-optimal maximum likelih...

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Abstract

A method for determining a signal vector comprising a plurality of components from a received signal vector is described, wherein a component of the plurality of components is selected and for each candidate symbol of a list of candidate symbols, wherein each candidate symbol represents a possible symbol for the selected component, a candidate signal vector for the candidate symbol is generated under the assumption that the selected component is equal to the candidate symbol. The signal vector is determined based on a quality measure of the candidate signal vectors.

Description

technical field [0001] The invention relates to a method for determining a signal vector, a system for determining a signal vector and a computer program element. Background technique [0002] Recent studies in information theory have shown that the wireless channel capacity in MIMO (Multiple Input Multiple Output) communication systems can increase linearly with the number of transceiver antennas. The great potential of exploring the spatial domain by using multiple antennas to achieve high data rates in wireless communications has attracted increasing attention in the commercial and scientific communities. [0003] The IEEE 802.11 Wireless Local Area Network (WLAN) Working Group has established Task Group 802.11n for standardization of higher throughput enhancements of 802.11 by using MIMO technology. It is assumed that a data rate transmission of more than 100 Mbps (for example, 320 Mbps with a bandwidth of 20 MHz) is provided in a WLAN system. Indeed, MIMO technology i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/00H04J99/00
CPCH04B7/0857H04L25/03331H04L2025/03426
Inventor 雷中定戴永梅孙素梅
Owner AGENCY FOR SCI TECH & RES
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