why qpsk is done for 45 135225315 not 0 90.270 360
degrees "degrees why "
- 1 Answers
- 2188 Views
- I also Faced
- E-Mail Answers
Answer Posted / Rajnikant Sharma
QPSK (Quadrature Phase Shift Keying) is used to modulate signals in wireless communication systems. In QPSK, the carrier wave is represented by two orthogonal signals that are 90 degrees out of phase with each other. The signal constellation consists of four points at 0, 90, 180, and 270 degrees. Therefore, QPSK is typically used for quadrants of 45, 135, 225, and 315 degrees to ensure that the signals are well-separated and avoid interference.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Draw the symbol of jfet and mosfet.
Hi i am chinna reddy i had completed my b.tech(ECE)2010 passout. but still no job please if anyone help me and suggest me. my mailid:chinnareddy.be@gmail.com Thanks&Regards chinna
can anyone provide apgenco previous question papers and materials to this id balarajyarajala@gmail.com
Please, give me the simple circuit dig. for "oscillator with variable frequency & upto 6W". I will be very thankful to you.
plz send last 5 year paper set for JE-II(ELECTRICAL)Exam held on few month in mumbai
R/s syllabus required to crack Mahagenco interview for jr eng. post. I also want sample papper
plz help me i want previous question papers of section engineer rrb electronics send me plz sadiksharif@gmail.com
hi i am sushil can anyone send me the previous year question paper for AAI(JR.excecutive,electronics)to my email kingston_s007@yahoo.com
Hi Friends pls give information regarding BARC written test. am attending written exam on 1st September 2009.mail me on sanjaykm1982@indiatimes.com/sanjaykumar.b.mathur@relianceada .com
needed web address and its directory for objective type question with answer in electronics instrumentation paper.
Please send BSNL TTA Question Answer
HI..!! I THINK THIS SITE IS AN EXCELLENT SOURCE FOR YOUNG ENGINEERS, I READ THE POSTS REGARDING DIFFERENT PLACEMENT PAPERS IT WAS INDEED HELPUFL...BUT FRM WHR CAN I GET THE WHOLE APTITUTE PAPER FOR REFERENCE??
hi freinds my name is lokesh and i am preparing for bel so anybody having bel question papers can please send to my mail-loki_426@yahoo.com
Dear concern Plz provide me the solved papers of Railway section engineer in signal...
please provide me technical question paper and the details of exam dates
