The Tech Leaf

What is Baseband? Baseband is a signal that has a near-zero frequency range, i.e. a spectral magnitude that is nonzero only for frequencies in the vicinity of the origin (termed  f  = 0) and negligible elsewhere. In telecommunications and signal processing, baseband signals are transmitted without modulation, that is, without any shift in the range of frequencies of the signal. Baseband has a low-frequency—contained within the bandwidth frequency close to 0 hertz up to a higher cut-off frequency. The baseband can be synonymous with lowpass or non-modulate, and is differentiate from passband, bandpass, carrier-modulate, intermediate frequency, or radiofrequency (RF). Baseband Signal Spectrum of a baseband signal, energy “E” per unit frequency as a function of frequency “f”. The total energy is the area under the curve. Baseband Signal A base-band signal or lowpass signal is a signal that can include frequencies that are very near zero, by comparison with its highest frequency

What is Back-End? In the client-server model, the server is usually considered the back end and the client is usually considered the front end, even when some presentation work is actually done on the server itself. The terms front end and back end refer to the separation of concerns between the data access layer (backend), and the presentation layer (front end) of a piece of software, or the physical infrastructure or hardware. The server-side (or "backend") code usually resides on the server, often far removed physically from the user. In telecommunication, the front can be considered a device or service, while the back is the infrastructure that supports the provision of service. In software architecture, there may be many layers between the hardware and end-user. The front is an abstraction, simplifying the underlying component by providing a user-friendly interface, while the back usually handles data storage and business logic. Back-end in Software In content