spectrum 300mbps

features of signals, however, the frequency domain characteristics of signals are easily obtained through Fourier transformation.The simple and common understanding of Fourier transform is to combine seemingly chaotic signals into basic sine (Cosine) signals of a certain amplitude, phase, and frequency, the purpose of Fourier transformation is to find out the frequency corresponding to the large amplitude (High Energy) signals in these basic sine (Cosine) signals, so as to find out the main vib

infinitely long input signal in the time domain ). Let's look at the Fourier transform into a function in C language, and the output of the signal is regarded as an I/O problem, then, you can use X-> F (x)-> F-1 (x)-> Y to solve any difficult X-> Y problems. 1. What is frequency?A basic assumption: All information has the characteristics of frequency, the sound level of the audio signal, the spectrum of light, the cycle of the electronic shock, and s

I. Concepts White Noise) Random Noise with the same energy at all frequencies is called white noise. The power spectral density of white noise is evenly distributed throughout the frequency domain. White noise is a random signal or random process with the power spectrum density constant. In other words, the power of this signal in each frequency band is the same, because the white light is composed of the monochrome light of various frequencies (col

The enum tool for C + + provides another way to create symbolic constants, which can be substituted for Const. It also allows you to define new types, but you must follow strict restrictions. The syntax for using an enum is similar to the usage structure.enum Spectrum{red,orange,yellow,green,blue,violet,indigo,ultraviolet};This statement accomplishes two tasks. Make spectrum the name of the new typ

UWB technology is a new kind of wireless communication technology. It is directly modulated by impulse pulses with very steep rise and fall times, so that the signal has a GHz magnitude of bandwidth. Ultra-wideband technology solves the major problems of communication, which is not sensitive to channel fading, low power spectral density, low interception capability, low system complexity, and can provide several centimeters of positioning accuracy. The advantages of UWB Compared with other wir

to explore how to use colors effectively on the site, while also providing a number of color blending techniques that allow you to use colors to harness your web design. Color Science We can see that color is formed by interacting with three elements: the light source, the reflective properties of the object, and the way the human retina and the visual cortex of the brain interact with light waves. No matter what media we use to work-painting, printing or networking-we all have to rely on the a

1. Introduction The purpose of this article is to provide a guided technical overview of Lora and LoRaWAN technologies. Low-Power wide area network (Lpwan) supports the vast majority of IoT devices that are expected to be hundreds of millions of orders of magnitude. LoRaWAN optimizes the battery life, capacity, range, and overhead of Lpwan in a bottom-up manner at design time. This paper gives an overview of the LoRaWAN norms in different regions, and compares several competing technologies in

controller"-"Wireless Network"-"Wids Configuration" to modify;When setting the frequency band, you need to popularize the knowledge of WiFi:First generation: IEEE 802.11a physical rate 54Mbps frequency range: 5.150-5.350ghz,5.475-5.725ghz,5.725-5.825ggz;Second generation: IEEE 802.11b physical rate 11Mbps frequency range: 2.4g-2.4835ghz;Third generation: IEEE 802.11g physical rate 54Mbps frequency range: 2.4g-2.4835ghz;Fourth generation: IEEE 802.11n physical rate

an example, Fortiap 210B is a business-grade 802.11n solution for sustainable use, providing a total throughput of up to 300Mbps for applications where demanding requirements can be met. The FORTIAP 210B uses a single-radio dual-band (2.4GHz and 5GHz) 2x2 MIMO technology. The Fortiap 210B is an enterprise-class access point that provides fast client access and intelligent application detection and traffic shaping with two internal antennas that suppo

1. Hard Disk Basics(1) The physical composition of the hard disk: platters, mechanical arms, head, spindle motor and control circuit board and other components.(2) Disk partitioning Sector: sector, size 512bytes. Tracks: track, divided by vendor.Cylinder: cylinder, a magnetic column consisting of the same track on all platters.Mbr:master Bootrecord (512bytes), master boot record, the 0th sector on the outer track of the entire hard disk, the partition table information and boot program that hold

Access by name is a primary purpose of file system existenceis a software that manages binary binaries that exist on diskIn order to be able to install multiple systems on one disk, the concept of partitioning was introducedTrack: The tracks are well-divided by the manufacturerSector: Sectorequipment with fixed angular velocityAny sector on any disk, the average time read is called the average seek timeCylindrical Surface:Partition:The No. 0 sector stores the partition information of the disk,Mb

size. For example, broadband for 100Mbps, wireless router or terminal support for the highest wireless rate of 54Mbps or 150Mbps, the use of wireless terminals to test the speed, can not reach 100Mbps. In general, 100M Broadband uses more than 300Mbps of routers and network cards to experience full speed effect. Note: 150Mbps wireless rate, in the actual environment can be up to 80Mbps or so. Wireless router or wireless terminal support the highes

Laptops, smartphones and tablets are mobile devices that each university can choose from. In order to meet the need for Internet access anytime, and to cope with more bandwidth-intensive mobile applications, colleges and universities have started investing in their wireless LANs so that students and faculty can transmit larger files and applications over wireless networks. So today's WLAN can be connected to a wired network through a variety of ports to provide high-performance, powerful, and se

certain degree of adaptability between the broadband network cable and the router WAN, which may affect the speed of the terminal at the router, and try to change the network cable at the WAN port and then speed it again. TP Router does not reach the solution of broadband speed two, cable speed normal, wireless speed slow 1, check the wireless maximum rate Check the wireless terminal or wireless router to support the highest wireless speed, if one of the two than the application of broadband

Tags: RAID levelThe rapid development of computer and network technology has increased the requirements of storage performance and data reliability. In the enterprise environment, when the company server has simultaneous access to 3000+ users, and the user simultaneously performs different file read and write operations, the read and write performance of a single hard disk is limited and the performance bottleneck is prone to occur. Common parallel interface hard drives such as early IDE hard dr

, the difference must exist because these two equations are used under two different conditions. How can we prove the DFT synthesis formula, I want to have a very strong theoretical knowledge of advanced mathematics. This is the work of a person studying mathematics. I don't need such a thorough understanding of ordinary users, but the Fourier series is easy to understand, we can at least see from the Fourier series formula the rationality of the DFT synthesis formula. Im [k] AND Re [k] In the D

, while the outer iteration loop calls the inner iteration loop. However, in the decoding process, the process of Harman decoding and anti-quantization is implemented separately. The frequency lines of each grain-level group are encoded using different Harman tables. Therefore, different decoding methods are required in the decoding process. The back-quantization spectrum process is based on the obtained Harman decoded data, and based on the full-scal

Bandwidth defects make WiFi mobile phones unable to become mainstream Text/item Creation Due to the inherent defects in the spectrum, Wi-Fi is doomed to become a mainstream wireless city, which involves a bearing capacity problem, from the very beginning, wireless cities were not designed for nationwide Internet access. They used a small free public channel spectrum, its general frequency is not enough to

model, it is constructed to solve the computing problem (for example, how to obtain the output signal for an infinitely long input signal in the time domain ). Let's look at the Fourier transform into a function in C language, and the output of the signal is regarded as an I/O problem, then, you can use X-> F (x)-> F-1 (x)-> Y to solve any difficult X-> Y problems. 1. What is frequency?A basic assumption: All information has the characteristics of frequency, the sound level of the audio signal,

"Non-line-of-sight transmission" NLOS and Non-LOS ), it is no longer required that the user's receiving and sending antennas must be installed at the high point on the roof, but to allow the antennas to be mounted on the outdoor wall or even on the indoor table. This is a major improvement and is very beneficial for the promotion and application of FWA. That is to say, in order to make the wireless FWA compete with the wired ADSL-modem, we must strive for NLOS-FWA. In this way, the client is ea