Article | 30-November-2018
mobile communication.
However, the influence of channel parameters on receiver terminals can not be ignored in signal transmission. Therefore, a precoding algorithm based on M spread spectrum is proposed, which is pre processed before sending signals. In order to achieve the purpose of simplifying the receiving device.
II.
MULTI ANTENNA MIMO SYSTEM
A.
Multi Antenna MIMO System Model
MIMO multi antenna technology is a major breakthrough in antenna technology in the field of wireless mobile
Sun Ruihua,
Bai Junying,
An Yongli
International Journal of Advanced Network, Monitoring and Controls, Volume 3 , ISSUE 3, 61–69
research-article | 30-November-2020
Petäjäjärvi et al. (2017) and Raza et al. (2017). A solution given for LPWAN is the LoRaTM platform, which enables lower power and lower cost end devices, with a reliable backup system. The end-users (EU) communicates in sub-GHz bands (different in every country) and uses frequency shift keying (FSK) modulation, or a chirp spread spectrum (CSS) modulation, in which the signal is spread over a wide band channel, with the ability to recover quickly from noise and interference. The research community is
Gunjan Gupta,
Robert Van Zyl
International Journal on Smart Sensing and Intelligent Systems, Volume 14 , ISSUE 1, 1–15