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Multi-carrier modulation and demodulation method for elliptical spherical wave based on signal grouping optimization

An elliptical spherical wave, multi-carrier modulation technology, applied in the field of information transmission, can solve the problems of PSWFs signal interference, system error rate increase, etc., to increase the number of modulation symbol combinations, high system frequency band utilization and system error performance, The effect of improving the efficiency of information transmission

Active Publication Date: 2022-07-15
NAVAL AVIATION UNIV
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Problems solved by technology

However, due to the PSWFs-NPSM in the non-orthogonal framework, there is interference between the PSWFs signals of different branches, and there is a problem that the bit error rate of the system increases.

Method used

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  • Multi-carrier modulation and demodulation method for elliptical spherical wave based on signal grouping optimization
  • Multi-carrier modulation and demodulation method for elliptical spherical wave based on signal grouping optimization
  • Multi-carrier modulation and demodulation method for elliptical spherical wave based on signal grouping optimization

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Embodiment 1

[0101] Embodiment 1: The number of elements in the set of activation signal channels k is equal to 1.

[0102] In order to better illustrate the advantages of the present invention, the embodiment uses a non-sinusoidal time-domain quadrature modulation based on PSWFs (Wang Hongxing, Zhao Zhiyong, Liu Xiguo, et al. Non-sinusoidal time-domain quadrature modulation method: ZL200810159238.3 [P].2011-02 -02.), OFDM combined with signal index (BAEAR E, AYGOLU U., PANAYLRCL E, et al. Orthogonal frequency division multiplexing with index modulation [J]. IEEE Transactions on SignalProcessing, 2013, 61(8): 5536–5549. )As a comparison. in accordance with figure 1 , figure 2 , image 3 , according to the signal processing steps of the elliptical spherical wave multi-carrier modulation and demodulation method based on signal grouping optimization, the relevant parameters are set as follows: the bandwidth is 1.44MHz, the frequency interval is F=15kHz, the number of symbol periods is 14,...

Embodiment 2

[0105] Embodiment 2: The number of elements in the set of activation signal number k is greater than 1.

[0106] In order to better illustrate the advantages of the present invention, the embodiment uses a non-sinusoidal time-domain quadrature modulation based on PSWFs (Wang Hongxing, Zhao Zhiyong, Liu Xiguo, et al. Non-sinusoidal time-domain quadrature modulation method: ZL200810159238.3 [P].2011-02 -02.), OFDM combined with signal index (Fan R, Yu Y J, Guan Y L. Generalization of Orthogonal Frequency Division Multiplexing With Index Modulation [J]. IEEE Transactions on Wireless Communications, 2015, 14(10): 5350-5359.) As a comparison. According to the signal processing steps of the elliptical spherical wave multi-carrier modulation and demodulation method based on signal grouping optimization, on the basis of Embodiment 1, the relevant parameters are modified as follows: parameter 1=5, the number of signal paths in each group of PSWFs is 4; combined with the signal index T...

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Abstract

The invention provides an elliptical spherical wave multi-carrier modulation and demodulation method based on signal grouping optimization, which belongs to the technical field of information transmission. At the transmitting end, the optimization of signal grouping is adopted, and the information loading of two dimensions is carried out by using signal index and pulse amplitude modulation, which ensures the high energy aggregation of the signal and improves the utilization rate of the system frequency band, increases the number of modulation symbol combinations, and improves the system. Band utilization rate; at the receiving end, based on the difference between the modulation symbols loaded by the active and inactive signals, a signal index detection method based on order statistics and local optimum is used to detect the signal index. The modulation method provided by the invention can improve the system frequency band utilization rate and the system bit error performance under the premise of not increasing the number of elliptical spherical wave signal paths and inter-signal interference, and not significantly reducing the signal index detection performance, and has a lower signal index Check the system complexity.

Description

technical field [0001] The present invention relates to radio communication technology, and more particularly, to an elliptical spherical wave multi-carrier modulation and demodulation method based on signal grouping optimization, which belongs to the technical field of information transmission. Background technique [0002] The next-generation communication system puts forward higher requirements for the "quality", "quantity" and "diversity" of information transmission, and requires a new air interface that is more flexible and has a higher information transmission rate, directly in the time-frequency domain two-dimensional space. Resource allocation, to achieve flexible allocation and dynamic sharing of different types of time-frequency resources. As one of the key technologies of the NR physical layer, the signal waveform needs to take into account both flexibility and spectrum utilization. How to improve the flexibility of the signal waveform and the utilization of the s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L27/34H04L27/36
CPCH04L27/2601H04L27/2666H04L27/3483H04L27/362
Inventor 王红星陆发平刘传辉康家方张磊刘锡国
Owner NAVAL AVIATION UNIV
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