As LTE-Cell-Scanner doesn't support TDD mode:
https://github.com/Evrytania/LTE-Cell-Scanner

I fork LTE-Cell-Scanner and add TDD support to it: https://github.com/JiaoXianjun/LTE-Cell-Scanner

It works fine with rtl-sdr E4k tuner dongle below 2.2GHz, but doesn't work in 2.5~2.7GHz even with external MMDS-LNB.

Because the algorithm assumes analytic relationship between carrier and sampling frequency error.

I write some matlab scripts (https://github.com/JiaoXianjun/rtl-sdr-LTE ) to separate carrier and sampling processing in algorithm. Aided by MMDS-LNB, the scripts can detect TDD&FDD LTE cell in 2.5~2.7GHz now!

12 LTE Cells information are decoded. 2 are FDD LTE, the rest are TD-LTE. Because here is China! (Partly because that TD-LTE is announed earier than FDD by government)

Hope that in the future these features can be merged to original LTE-Cell-Scanner.

Scanning results and video are attached.http://www.youtube.com/watch?v=4zRLgxzn4Pc