Patent ID: 8369395

Claim:
A portable apparatus of measuring a wireless channel and a multiple antenna correlation, the apparatus comprising: a Radio Frequency (RF) unit to control a frequency of a signal to be measured, to broadcast the signal to be measured through multiple transmission antennas, to control a frequency of a received signal, and to send the received signal to a baseband unit, the received signal being received through multiple receiving antennas; and the baseband unit to generate and transmit, to the RF unit, the signal to be measured, to measure wireless channels for each of the multiple transmission antennas and wireless channels for each of the multiple receiving antennas based on the received signal output from the RF unit, to calculate a correlation for each of the multiple transmission antennas based on the wireless channels for each of the multiple transmission antennas, and to calculate a correlation for each of the multiple receiving antennas based on the wireless channels for each of the multiple receiving antennas, wherein the baseband unit searches a maximum peak value from a channel impulse response of any one of the wireless channels for each of the multiple receiving antennas, retrieves a delay value corresponding to the maximum peak value, gathers channel coefficients having an identical delay value in each of the wireless channels, and calculates a receiving antenna correlation value based on the channel coefficients.