Analysis of Block and Comb Type Pilots Patterns in Channel Estimation in OFDM
A B Bambhaniya
Electronics and Communication Dept., BVM Engg. College, V V Nagar-388120, Gujarat, India , IN
J M Rathod
Electronics and Communication Dept., BVM Engg. College, V V Nagar-388120, Gujarat, India , IN
Keywords: Block type pilot pattern, comb type pattern, channel estimation, Least Square, Minimum Mean Square Error.
Abstract
Now a days, because of wireless communication, worlds became a family. That is due to change of fast technology. OFDM system is very powerful modulation technology which can transmit and receive large number of data. Performance of system can be increased using channel estimation. The pilot aided channel estimation is very much useful method in OFDM. Different types of pilot patterns have special uses. But mainly two pilot patterns are very much useful. One is block type and other is comb type pilot arrangement. Using these patterns with LS and MMSE channel estimation techniques, reduce the BER and SER and increase the efficiency
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