Question
Download Solution PDFIf the in‐phase and quadrature components in an M‐ary PSK system are permitted to be independent, then this scheme becomes a:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
QAM : Quadrature amplitude modulation
QAM utilises both amplitude and phase components to provide a form of modulation that is able to provide good spectrum efficiency.
QAM is a signal in which two carriers shifted in phase by 90 degrees (i.e. sine and cosine) are modulated and combined.
Quadrature tells 90 degrees phase difference between two components.
Signal is consisted of two components :
- In phase Component P
- Quadrature Component Q
Signal is combination of both in phase and quadrature component.
in above diagram both amplitude and phase changes.
Last updated on Jun 19, 2025
-> The UGC NET City Slip 2025 has been released on its official website today.
-> The UGC NET June 2025 exam will be conducted from 25th to 29th June 2025.
-> The UGC-NET exam takes place for 85 subjects, to determine the eligibility for 'Junior Research Fellowship’ and ‘Assistant Professor’ posts, as well as for PhD. admissions.
-> The exam is conducted bi-annually - in June and December cycles.
-> The exam comprises two papers - Paper I and Paper II. Paper I consists of 50 questions and Paper II consists of 100 questions.
-> The candidates who are preparing for the exam can check the UGC NET Previous Year Papers and UGC NET Test Series to boost their preparations.