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Blind signal separation using array deflection

A signal and antenna array technology, applied in the field of signal processing, can solve problems such as large volume and area

Inactive Publication Date: 2007-08-22
INTERDIGITAL TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, each sensor provides a signal input to the hybrid matrix, resulting in a larger volume required for a portable communication device

Method used

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  • Blind signal separation using array deflection
  • Blind signal separation using array deflection
  • Blind signal separation using array deflection

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Embodiment Construction

[0050] The invention will now be described more fully hereinafter with reference to the accompanying drawings showing preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited as set forth in this embodiment. Rather, these provided examples will be thorough and complete, and will fully convey to those skilled in the art. Like numbers designate like elements, and main numerals are used to designate similar elements in alternative embodiments.

[0051] In the communication network, there are source signals prepared for a specific communication device, and in the same frequency band, there are source signals prepared for other communication devices. There are also signals generated from noise that are not used for communication, but which are also received by communication devices.

[0052] To facilitate the decoding of the source signal of interest, blind signal separation is used to separate...

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Abstract

A communications device for separating source signals provided by M signal sources includes an antenna array comprising N elements for forming at least N antenna beams for receiving at least N different summations of the M source signals, with N and M being greater than 2. A controller is connected to the antenna array for selectively forming the at least N antenna beams. A blind signal separation processor forms a mixing matrix comprising up to the at least N different summations of the M source signals. The blind signal separation processor also determines if the different summations of the M source signals are correlated or statistically independent, and if not, then cooperates with the controller for forming different beams for receiving new different summations of the M source signals to replace the different summations of the M source signals that are not correlated or statistically independent in the mixing matrix. The desired source signals are separated from the mixing matrix by the blind signal separation processor.

Description

technical field [0001] The present invention relates to the field of signal processing, and more particularly to the separation of desired signals from a mixture of source signals using blind signal separation (BSS) techniques. Background technique [0002] Blind Signal Separation (BSS) is concerned with recovering a source signal from a composite signal containing a mix of the source signals. The separation is "blind" because the separation is usually performed with limited information about the signal, the source of the signal, and the effects of the transmission channel on the signal. [0003] A well-known paradigm is the "cocktail party" phenomenon when someone in a group can isolate a signal sound from the combination of all the sounds in the room. Blind signal separation is particularly applicable to cellular and personal wireless communication devices, where many frequency bands are cluttered by the presence of numerous radio frequency transmitters, which often co-ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q3/00
Inventor 史蒂文・J・高伯格
Owner INTERDIGITAL TECH CORP
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