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A Universal Filtering Multi-Carrier System Based on Non-orthogonal Multiple Access

A multi-carrier system, non-orthogonal multiple access technology, applied in the field of general-purpose filtering multi-carrier systems, can solve the problem that the power wireless private network cannot fully meet the broadband and narrow-band coexistence of power services, and achieves the improvement of detection performance and transmission performance. Effect

Active Publication Date: 2021-05-18
INFORMATION & COMM BRANCH OF STATE GRID JIANGSU ELECTRIC POWER +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The future energy Internet will have the ability to collect, transmit, and process large-scale, distributed, and multi-type business data. However, the current wireless private network for electric power cannot fully satisfy the coexistence of broadband and narrowband for electric power business, massive terminal access, and high reliability. , low latency, low power consumption and other business scenario requirements

Method used

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  • A Universal Filtering Multi-Carrier System Based on Non-orthogonal Multiple Access
  • A Universal Filtering Multi-Carrier System Based on Non-orthogonal Multiple Access
  • A Universal Filtering Multi-Carrier System Based on Non-orthogonal Multiple Access

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Embodiment 1

[0062] It is assumed that the channel used in this embodiment is a 6-tap normalized Rayleigh fading channel. For the fairness of comparison, the UFMC system and the modulation method of the general filter multi-carrier system based on non-orthogonal multiple access proposed by the present invention are both quadrature phase shift keying (QPSK, Quadrature Phase Shift Keying), and the number of subcarriers Both are N=128, the number of users is 8, and the sub-band filters all use Dolph-Chebyshev filters with a length of 16 and a side lobe attenuation of 22dB.

[0063] figure 2 Compared in the above-mentioned embodiment 1, the symbol error rate (SER, Symbol Error Rate) of the general filter multi-carrier system based on non-orthogonal multiple access proposed by the present invention and the existing UFMC system varies with the signal-to-noise ratio (SNR, Signal-to-Noise Ratio) change simulation curve. In this embodiment, the signal-to-noise ratio is defined as the ratio of th...

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Abstract

The invention discloses a general filter multi-carrier system based on non-orthogonal multiple access, including a transmitter and a receiver. At the transmitting end, each user occupies two subbands for information transmission at the same time, that is, the signals of two users are simultaneously sent on the same subband; at the receiving end, the frequency domain received signals of all users are simultaneously equalized through parallel interference cancellation technology processing to recover the original data information sent by all users. Compared with the existing general filtering multi-carrier system, the present invention can fully realize the frequency diversity gain of the channel bandwidth, and has the advantages of excellent performance, low time delay and the like.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a general filter multi-carrier system based on non-orthogonal multiple access. Background technique [0002] In the Energy Internet, large-scale sensor networks need to support ubiquitous collection and transmission tasks, and new power services and trading platforms need better network quality assurance. How the next-generation mobile communication network can meet the requirements of higher bandwidth, extremely low latency, and ubiquitous connection for various power services is an urgent problem to be solved. [0003] As an effective implementation form of new waveform technology, Universal Filtered Multi-Carrier (UFMC, Universal Filtered Multi-Carrier) technology performs sub-band filtering on a group of continuous sub-carriers, which is an Orthogonal Frequency Division Multiplexing (OFDM, Orthogonal Frequency The promotion of Division Multiplexing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2601H04L27/2628H04L27/265
Inventor 张明轩缪巍巍丁正阳曾锃张厦千唐灏党建吴梦婷吴亮张在琛
Owner INFORMATION & COMM BRANCH OF STATE GRID JIANGSU ELECTRIC POWER
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