ScholarLens Back to search
2010•Radio EngineeringRequires access

A Design and Implementation of Full Digital QAM Demodulator

Wang Xiao-ya

Open publisher page 0 citations

Abstract

Quadrature Amplitude Modulation (QAM) is a kind of modulation modes with high utilization ratio of frequency spectrum.In the paper,the influence of frequency offset and channel distortion on demodulator is analyzed.A design and implementation of full digital QAM demodulator is presented.The realization of timing synchronization is introduced in detail.A high performance cubic interpolation filter is adopted.The interpolation controller is a key unit,which decides the instant and the group of input data of interpolator.Symbol timing error is detected by Gardner Algorithm.The demodulator achieves high performance by using a joint architecture of carrier synchronization and equalization.The design is implemented in XILINX FPGA,and it can be applied to demodulation for communication or reconnaissance receiver.

About this research paper

What this paper is about

Quadrature Amplitude Modulation (QAM) is a kind of modulation modes with high utilization ratio of frequency spectrum.In the paper,the influence of frequency offset and channel distortion on demodulator is analyzed.A design and implementation of full digital QAM demodulator is presented.The realization of timing synchronization is introduced in detail.A high performance cubic interpolation filter is adopted.The interpolation controller is a key unit,which decides the instant and the group of input data of interpolator.Symbol timing error is detected by Gardner Algorithm.The demodulator achieves high performance by using a joint architecture of carrier synchronization and equalization.The design is implemented in XILINX FPGA,and it can be applied to demodulation for communication or reconnaissance receiver.

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

Quadrature Amplitude Modulation (QAM) is a kind of modulation modes with high utilization ratio of frequency spectrum.In the paper,the influence of frequency offset and channel distortion on demodulator is analyzed.A design and implementation of full digital QAM demodulator is presented.The realization of timing synchronization is introduced in detail.A high performance cubic interpolation filter is adopted.The interpolation controller is a key unit,which decides the instant and the group of input data of interpolator.Symbol timing error is detected by Gardner Algorithm.The demodulator achieves high performance by using a joint architecture of carrier synchronization and equalization.The design is implemented in XILINX FPGA,and it can be applied to demodulation for communication or reconnaissance receiver.

Key concepts: Demodulation, QAM, Quadrature amplitude modulation, Computer science, Electronic engineering, Field-programmable gate array, Synchronization (alternating current), CORDIC

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
A Design and Implementation of Full Digital QAM Demodulator — Research Paper | ScholarLens