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A low-complexity mimo-fbmc system data sending and receiving method and device

A MIMO-FBMC, system data technology, applied in transmission systems, baseband systems, multi-frequency code systems, etc., to offset the loss of adjustment rates, simplify the MIMO demodulation process, and reduce complexity.

Active Publication Date: 2020-11-20
SOUTHEAST UNIV
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Problems solved by technology

[0005] Purpose of the invention: Aiming at the difficulty of combining existing FBMC and MIMO, the present invention aims to provide a low-complexity MIMO-FBMC system data sending and receiving method and device to simplify the hardware implementation of the FBMC system and obtain multi-antenna gains

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  • A low-complexity mimo-fbmc system data sending and receiving method and device
  • A low-complexity mimo-fbmc system data sending and receiving method and device
  • A low-complexity mimo-fbmc system data sending and receiving method and device

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Embodiment Construction

[0054] The present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0055] Such as figure 1 As shown, a low-complexity MIMO-FBMC system data transmission method disclosed in the embodiment of the present invention mainly includes the following steps:

[0056] (1) MIMO splitting: divide the input bit stream according to the number of MIMO transmit antennas N ss assigned to N ss The MIMO system discussed here is a single-user multi-antenna system, and the transmitting and receiving antennas are all N ss .

[0057] (2) Parallel QAM modulation: According to the overlapping factor K of the prototype filter designed in the FBMC system by the Cognitive Wireless Physical Layer (PHYDAYS) project, the bit data on each antenna is subjected to M-order QAM modulation in K-way parallel mode, and then mapped to subcarriers for transmission. Assuming that the bit length of the input data is L, and the number of subcarriers is...

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Abstract

The invention discloses a less complex MIMO-FBMC system data transceiving method and device. According to the method, QAM modulation is performed on a signal of each antenna in a parallel manner at asending end and the signal is modulated on an odd number of carrier or an even number of subcarrier only; a QAM symbol is filtered through a frequency domain extension manner, and signal correlation is eliminated through cyclic shift; and finally, time domain data is overlap-added so as to mix wave forms and send out the mixed wave forms, wave forms are separated at a receiving end, a series of corresponding demodulation steps are performed so as to recover original sent data. In the method, signals are modulated by using the odd number or even number of subcarrier only, complex overlap-addedwave forms in the FBMC system are mixed and are processed parallelly through multiple paths, therefore, interference between subcarriers and interference between symbols are prevented, further, lowered efficiency due to frequency domain extension and lowered rate due to delayed waiting are prevented, the data processing process is simplified effectively, and hardware is realized less complexly.

Description

technical field [0001] The invention relates to a low-complexity MIMO-FBMC system data sending and receiving method and device, belonging to the field of wireless communication. Background technique [0002] In order to better support various application scenarios of 5G, the research of new multi-carrier technology needs to pay attention to various requirements. Among them, the Filter Bank Multi Carrier (FBMC) technology is based on subcarrier filtering, which abandons the orthogonality in the complex domain in exchange for the degree of freedom in the design of the time domain locality of the waveform. This degree of freedom This enables FBMC to adapt to channel changes more flexibly. [0003] At present, the multi-carrier symbol sequence modulation is realized by combining FBMC with multi-frequency interleaving technology obtained by offset quadrature amplitude modulation. The main process is as follows: firstly, the modulated FBMC symbol sequence is divided into real par...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04L27/32H04L27/34H04B7/0413H04L25/03
CPCH04B7/0413H04L25/03821H04L27/2627H04L27/264H04L27/2697H04L27/32H04L27/34
Inventor 黄永明徐颖群高强王畑
Owner SOUTHEAST UNIV
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