Digital hybrid amplifier calibration and compensation method

An amplifier and hybrid matrix technology, applied in the field of calibrating the hybrid matrix amplifier, can solve problems such as training signals not complying with supervision, service interruption, and training signals being unacceptable

Active Publication Date: 2014-11-05
ALCATEL LUCENT SAS
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  • Abstract
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Problems solved by technology

However, the transmission of training signals is not advisable because training signals do not comply with regulatory (e.g., Federal Communications Commission (FCC), European Telecommunication Standardization Institute (ETSI), 3rd Generation Partnership Project (3GPP), etc.) emission identification
[0004] Further, during the transmission of the training signal, the normal traffic signal is interrupted, which may cause service interruption
[0005] The transmission of training signals also increases the interference level of the overall system in adjacent wireless coverage areas, which may cause additional service interruptions
To generate this training signal, additional hardware and firmware are required

Method used

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] Embodiments of the present invention provide a hybrid matrix amplifier array and method for calibrating it without needing to transmit training signals. Accordingly, embodiments of the present invention do not require the use of training signals, or interruption of normal communication traffic.

[0016] Embodiments of the present invention are described as apparatuses represented by block diagrams and procedures or methods represented by flowcharts. Although the flowcharts describe the operation of the present invention as a sequential process, at least some of the operations may be performed in parallel, concurrently or synchronously. In addition, the execution order of operations in the present invention may be rearranged. The process of the present invention may be terminated when its operations have been performed, but may also include additional...

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Abstract

Methods and hybrid matrix amplifiers are provided. In a method of calibrating a hybrid matrix amplifier of a wireless transceiver, a plurality of signal paths having a digital and an analog portion are toggled such that the analog portion of each of the plurality of signal paths is active only during a corresponding buffer capture interval of a calibration process. The signal paths carry signals to be transmitted by an antenna arrangement. Channel estimates for each of the plurality of signal paths are generated based only on sampling data collected during the corresponding buffer capture interval. The hybrid matrix amplifier is calibrated based on the generated channel estimates.

Description

technical field [0001] The invention relates to an embodiment of a hybrid matrix amplifier and a method for calibrating the same. Background technique [0002] Typically, wireless transmitters located at base stations and mobile stations include hybrid (or Butler) matrix amplifiers. To meet isolation requirements between output ports, hybrid matrix amplifiers allow signal paths to share the same amplifier resources. Hybrid matrix amplifiers are known technology. [0003] Prior to operation, or during operation, the hybrid matrix amplifier must be calibrated to maintain isolation of the output ports. Typically, a hybrid matrix amplifier is calibrated by periodically transmitting a training signal. However, transmission of training signals is undesirable because training signals do not comply with regulatory (eg, Federal Communications Commission (FCC), European Telecommunication Standardization Institute (ETSI), 3rd Generation Partnership Project (3GPP), etc.) emission ide...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F3/60
CPCH03F3/602H03F3/60
Inventor 沃尔特·贡恰鲁克
Owner ALCATEL LUCENT SAS
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