Measurements and characterizations are rarely conducted about indoor self-interference channel of CCFD(Co-time Co-frequency full-duplex).An extensive self-interference channel measurement is performed at 2.6GHz under typical indoor environment with channel sounder based on vector network analyzer.By analyzing the measurement data

the empirical channel characteristics such as path loss exponent

RMS(root-mean-square)delay spread have been extracted.Results show that path loss exponent and RMS delay statistics are different according to antenna separation of transmitter-receiver.When the separation is larger than 1m

the path loss exponent is 1.86

and the RMS delay statistics follow lognormal distribution.When the separation is less than 1m

the path loss exponent is 1.52

and the RMS delay statistics at different antenna separation follow lognormal distribution whose mean and variance are linear functions of antenna distance respectively.