  The fourth-generation Wireless Technology (4G) has been adopted by all major
operators in the world and has already ruled the cellular landscape for around
a decade. A lot of researches and new technologies are being considered as
potential elements contributing to the next generation wireless communication
(5G). The lack of realistic and flexible experimentation platforms for
collecting real communication data has limited and slowed the landing of new
approaches. Software Defined Radio (SDR) can provide flexible, upgradable, and
long lifetime radio equipment for the wireless communications infrastructure,
which can also provide more flexible and possibly cheaper
multi-standard-terminals for end users. By altering the open-source code
individually, we can freely perform the real value measurement. This paper
provides a real Long Term Evolution (LTE) channel measurement method based on
the OpenAirInterface (OAI) for the evaluation of the channel prediction
algorithm. Firstly, the experimentation platform will be established by using
OAI, Universal Software Radio Peripheral (USRP), and commercial User Equipment
(UE). Then, some source codes of OAI are analyzed and changed, so that the
real-time over-the-air channel measurement can be achieved. The results from
the measurement are then trained and tested on the channel prediction
algorithm. The results of the test illustrate that the implemented channel
measurement method can meet the need for algorithms' verification and can be
further extended for more development of algorithms.
