Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
It uses deterministic channel modeling. in normal cases we get different multipaths from different directions and their amplitude is also different. the final signal we get is the sum of all the signals. the doppler spread of the signal also depends on the direction of arrival. for...
diversity can be increased more than selection by using maximal ratio combining. i have heard that transmit diversity in the base station has been included now only in the standard. other forms of spatial diversity have not been included.
with cell phones getting smaller and smaller can...
antenna size, attenuation and frequency allocation are some of the issues.
we need a high bit rate also. for large bandwidth applications the higher the centre frequency then the required bandwidth becomes only a very small fraction it.
diversity is used to overcome the fades.
time diversity is done by using error control codes and then interleaving so that fade at different times are not related.
when frequency selective fading is present ofdm is used or in the case of rake receivers the energy in the different multipaths are...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
