Method of improving the power efficiency of QPSK signals

Bondarev, A.; Maksymiv, Ivan; Maksymyuk, Taras

doi:10.1109/tcset.2016.7452028

Cited by 4 publications

(1 citation statement)

References 2 publications

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“…At the same time, a new polarization multiplexing technology has also been produced for QPSK, and PS-QPSK is also the modulation form with the highest power among related derivatives [12]. Relevant studies have shown that QPSK also has two improved research directions: using quasi-orthogonal modulation to increase the power of the transmitted signal; using an improved phase-locked loop device to improve the signal monitor to improve the signal detection efficiency [13]. Therefore, the performance improvement and format improvement of QPSK may be further developed for the research in this paper.…”

Section: Future Research Directionsmentioning

confidence: 99%

Analysis of anti-Gaussian channel interference ability of QPSK coding based on error detection and correction

Wang

2022

International Conference on Network Communication and Information Security (ICNCIS 2022)

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The transmission of communication signals must not only ensure the speed of transmission, but also ensure the accuracy of transmission. The current research has been able to draw the advantages and disadvantages of the application of different error-correcting codes. However, it is not enough to simply compare transmission performance between different error correction code applications. Therefore, this paper uses MATLAB to simulate the transmission environment of the real channel, analyzes the reception error of short-length data through QPSK coding and IQ modulation, and analyzes the signal transmission using error correction code (Hamming code) and error detection code (even check code). The transmission performances were explored and compared, and their anti-noise interference performance was analyzed. Studies have shown that for short-length data, the error correction method using Hamming code can resist limited noise interference, but it can save bandwidth and increase the proportion of effective signal bits. In the low signal-to-noise ratio case, the method of using even-check code to detect errors has problems. Errors may be generated, and the proportion of effective signal bits is low, but the adaptability to noise is stronger than the previous method. Therefore, it is recommended to select different transmission methods for transmission environments with different signal-to-noise ratio ranges, and the combination of the two may further improve the anti-noise interference capability of signal transmission.

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Section: Future Research Directionsmentioning

confidence: 99%