Patent ID: 9054934
Filing Date: 2015-06-09
Classification: H04B,H04L

Abstract:
1. In a communication link capable of both MIMO and SISO operation, apparatus for operating a receiver, said apparatus comprising: a first receiver block that receives a first OFDM signal via a first antenna element; a second receiver block that receives a second OFDM signal via a second antenna element; and a channel estimation block that during a first channel training period, within each of a plurality of frequency subchannels, obtains received signal measurements via said first antenna element and via said second antenna element; and wherein after said first channel training period and during a second channel training period, said first OFDM signal is processed to recover data; and wherein only if data is not recovered during said second channel training period, said first OFDM signal and said second OFDM signal are thereafter processed as a MIMO signal.