Method and system for receiving and transmitting signals and related device

Abstract

The invention discloses a method for receiving and transmitting signals. The method comprises the steps of distributing bit information produced by a signal source to a plurality of transmitting antennas, and encoding and modulating the bit information distributed to all transmitting antennas respectively; conducting spatial interleaving and Q-channel interleaving on all channels of encoded and modulated modulating symbols respectively; conducting pre-coding on all channels of symbols after the Q-channel interleaving, and then sending symbols through antennas respectively; receiving a plurality of channels of receiving symbols, and conducting pre-decoding on all channels of receiving symbols respectively; conducting Q-channel de-interleaving and spatial de-interleaving on all channels of symbols subjected to pre-decoding respectively; and demodulating and decoding all channels of symbols after the spatial de-interleaving. The invention also discloses a system for receiving and transmitting signals and related devices correspondingly. By the aid of the method, the system and related devices, the high transmission efficiency of the system can be achieved, the spectrum utilization efficiency can be improved, the transmission reliability can be improved through diversities, the wireless system anti-fading performance can be greatly improved, and the requirements for development of wireless transmission networks can be met.

Description

technical field [0001] The present invention relates to the field of multiple input and output (MIMO) communication, in particular to a method and system for transmitting and receiving signals, methods for transmitting and receiving signals, and related devices. Background technique [0002] With the widespread advancement of the mobile Internet around the world, the demand for wireless communication capacity is growing rapidly. On the other hand, the world's wireless spectrum is limited, and operators often have to pay a huge economic price to obtain a piece of precious spectrum resources. , which requires communication equipment to continuously improve the utilization of the wireless spectrum, otherwise it cannot meet the rapidly growing demand for wireless services. The multiple input and output (MIMO) technology is to significantly improve the spectrum utilization by increasing the number of antennas at the transmitting end and the receiving end. rate effect. [0003] I...

AI Technical Summary

Problems solved by technology

[0002] With the widespread advancement of the mobile Internet around the world, the demand for wireless communication capacity is growing rapidly. On the other hand, the world's wireless spectrum is limited, and operators often have to pay a huge economic price to obtain a piece of precious spectrum resources. , which requires communication equipment to continuously improve the utilization of the wireless spectrum, otherwise it cannot meet the rapidly growing demand for wireless services. The multiple input and output (MIMO) technology is to significantly improve the spectrum utilization by increasing the number of antennas at the transmitting end and the receiving end. rate effect

[0003] In addition, it should be noted that in fading channels, diversity is particularly important. In the case of optimal diversity, the error probability will decrease exponentially with the increase of the average signal-to-noise ratio. However, in some MIMO application scenarios, Although bit interleaved modulation increases the time diversity of coded modulation, however, due to the reduction of the minimum Euclidean distance, the transmission performance under the condition of high spectral efficiency (high code rate) is significantly deteriorated

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