Digital Modulation Systems

Digital Modulation Systems PCS systems represent the final frontier of cellular telephony and data communications. The spectrum allocated to PCS is divided into three major categories: • Broadband: Operates in the 1850–1910 MHz and 1930–1990 MHz. • Narrowband: Operates in the 901–902 MHz, 930–931 MHz, and 940–941 MHz bands. • Unlicensed.