MEASUREMENT METHODS ANALYZE DIGITAL MODULATION SIGNALS

THE emergence of complex digital modulation methods is creating a need for novel methods of displaying modulated signals for testing purpose s. Digital methods are becoming the modulation techniques of choice in the wireless-communication revolution, as they promise communications capabilities well beyond the mobile voice transmission offered by ana log cellular phones. Digital cellular, as supported by PCN (personal c ommunications network) in Europe and emerging PCS (personal communicat ions services) in the US, provides a link that includes voice, video, data, and two-way paging.