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Apparatus and method for simultaneous testing of multiple orthogonal frequency division multiplexed transmitters with single vector signal analyzer

A signal transmission and signal technology, applied in the direction of orthogonal multiplexing system, transmitter monitoring, multiplexing communication, etc., can solve the problems of increasing the total test cost and doubling the cost of test equipment

Inactive Publication Date: 2008-09-17
LITEPOINT
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

This adds little to the test time compared to traditional equipment, but will double the cost of the test rig, thus increasing the total cost of test

Method used

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  • Apparatus and method for simultaneous testing of multiple orthogonal frequency division multiplexed transmitters with single vector signal analyzer
  • Apparatus and method for simultaneous testing of multiple orthogonal frequency division multiplexed transmitters with single vector signal analyzer
  • Apparatus and method for simultaneous testing of multiple orthogonal frequency division multiplexed transmitters with single vector signal analyzer

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Embodiment Construction

[0039] Exemplary embodiments of the present invention are described in detail below with reference to the accompanying drawings. Such description is intended to illustrate the invention, not to limit the scope of the invention. Such embodiments have been described in sufficient detail to enable those skilled in the art to practice the invention, and other embodiments may be practiced with some modifications that do not depart from the spirit or scope of the invention.

[0040] Throughout this disclosure, unless the context clearly dictates otherwise, it should be understood that the respective circuit elements described may be singular or plural. For example, the term "circuitry" may include a single component or multiple components that are active and / or passive and connected or otherwise coupled together (eg, as one or more integrated circuit chips) to provide the desired functionality. Additionally, the term "signal" may refer to one or more currents, one or more voltages,...

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Abstract

The invention provides an apparatus and method for simultaneous testing of multiple orthogonal frequency division multiplex (OFDM) signal. A vector signal analyzer (600) transforms multiplex signal that is received via a signal communication path and includes a plurality of OFDM signal for providing a plurality of transformed data signal, wherein, multiplex signal data source includes a remote signal source of a plurality of signal transmitting processes relatively, and includes a plurality of data groups, each data group includes respective parts of a plurality of preposing code data, and respective parts of a plurality of transmitting data, each respective parts of a plurality of transmitting data and each one of a plurality of data transmitting processes and respective parts of a plurality of known data relative to the signal communication path, and each one of a plurality of transformed data signal including respective parts of a plurality of data groups, and at least respective parts of receiving and processing a plurality of known data, a plurality of preposing code data, at least respective parts of a plurality of transmitting data for providing a plurality of detection data of error vector amplitude (EVM) associated with multiplex data signal.

Description

[0001] related application [0002] This application claims priority to US Provisional Patent Application Serial No. 60 / 596,444, filed September 23,2005. technical field [0003] The present invention relates to testing of an Orthogonal Frequency Division Multiplexing (OFDM, orthogonal frequency division multiplexing) transmitter, in particular to testing the OFDM transmitter by using a vector signal analyzer (VSA, vector signal analyzer). Background technique [0004] It is well known that multiple-input multiple-output (MIMO) communication systems use multiple transmitters and receivers to enhance the reliability and signal capacity of the communication link. Testing of each transmitter is typically done by connecting each respective transmitter to the VSA and repeating the measurements for each transmitter in turn. Alternatively, another method involves connecting each transmitter to its own VSA and testing simultaneously. Thus, the first method requires only one VSA bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04J11/00H04B17/00H04B17/10
Inventor C・奥格瑞德S・贝内特V・帕帕帕拉斯克瓦D・沃韦斯R・什尔特
Owner LITEPOINT
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