Signal transmission method, signal reception method, communication device, and storage medium
A technology of signal transmission and signal reception, applied in the direction of error prevention/detection through diversity reception, digital transmission system, error prevention, etc., which can solve problems such as difficulty in channel estimation and difficulty in guaranteeing the reliability of channel information
Active Publication Date: 2020-10-13
CHONGQING BOE SMART ELECTRONICS SYST CO LTD +1
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Problems solved by technology
With the application of SM technology more and more widely, its limitations are gradually highlighted. In the SM system, the receiver must know the channel information, which brings great difficulty to the channel estimation, especially in the high-speed flow channel. The reliability of channel information is more difficult to guarantee
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[0070] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.
[0071] Please refer to figure 1 with figure 2 , figure 1 is a schematic diagram of a system model of a wireless communication system according to an embodiment of the present invention, figure 2 It is a schematic flowchart of a signal sending method according to an embodiment of the present invention, and the signal sending method includes:
[0072] Step S21: Encoding the input bit se...
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The present invention provides a signal sending method, a signal receiving method, and a communication device. The signal sending method includes: encoding an input bit sequence to obtain an encoded bit sequence; performing constellation mapping on the encoded bit sequence to obtain a constellation symbol X t ; Put the constellation symbol X t Converted to a space-time block S t ; According to the space-time block S t and the channel matrix H of the last time slot t‑1 , to obtain the bit to be modulated; modulate the bit to be modulated to obtain the modulated bit; obtain the signal block to be transmitted, the signal block to be transmitted is obtained from the modulated bit and the space bit, and the space bit is used to represent An activated transmit antenna; the signal block is transmitted through the transmit antenna. In the present invention, the differential space modulation technology is applied to the wireless communication system. The differential space modulation technology does not need to estimate the wireless communication channel, which simplifies the difficulty of system processing and improves the reliability of system transmission.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to a signal sending method, a signal receiving method and communication equipment. Background technique [0002] Multiple-Input Multiple-Output (MIMO) technology has been widely used in wireless communication systems due to its high diversity gain and multiplexing gain, but due to the increasingly serious inter-channel interference, the system Reliability gradually decreases. Spatial Modulation (SM) technology emerges as a branch technology of MIMO technology. SM technology only activates one transmitting antenna in each time slot, so it completely avoids interference between channels. In addition, compared with the traditional MIMO technology, the SM technology increases the spatial dimension. Therefore, under the same circumstances, its spectral efficiency is further improved compared with traditional MIMO technology. With the application of SM technology more and more wi...
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IPC IPC(8): H04B7/0413H04L1/06
CPCH04B7/0413H04L1/0612H04L1/0618H04B7/0669H04L1/0625
Inventor 谢云燕陈立春刘波程前庚王涵
Owner CHONGQING BOE SMART ELECTRONICS SYST CO LTD