In the previous post we calculated the Shannon Capacity of LTE as a function of bandwidth. We now calculate the capacity as a function of SNR (bandwidth fixed at 20MHz and signal power varied). We also use the concept of effective bandwidth to get a more realistic estimate of the capacity. The modified Shannon Capacity formula is given as:
eff1=0.9=due to adjacent channel leakage ratio and practical filter issues
eff2=0.93=due to cyclic prefix
eff3=0.94=due to pilot assisted channel estimation
eff4=0.715=due to signalling overhead
Note: This is the capacity in a SISO channel with no fading.
Author: John (YA)
John has over 15 years of Research and Development experience in the field of Wireless Communications. He has worked for a number of companies around the world including Qualcomm Inc. USA. He has an MS in Electrical Engineering from Virginia Tech USA and has published his work in international journals and conferences.