What is Difference Between Spread Spectrum and Frequency Hopping?
Most communication technologies we are familiar withradio, television, two-way radiosuse what is called narrowband communications. Each station or channel operates over a very thin slice of the radio spectrum. Because the station is assigned that particular band, and the FCC ensures that no other broadcasters in the local area use that same band through licensing, there is no interference. The range of each station is limited, so the same frequency can be re-used a great distance away without interference. Because many devices might use the ISM bands in a local area, additional technology is required to keep the various signals from interfering with each other. Fortunately, a technology has been developed over the past fifty years which permits such bandwidth “sharing.” This technology provides a way to spread the radio signal over a wide “spectrum” of radio frequencies, minimizing the impact of narrowband interference. In most cases, only small parts of the transmission are corrupted
