(原文刊于被sina关闭的我的sina博客)
感谢 http://hackrf.net/ 借给我HACKRF板供调试！
OpenCL加速的 TDD/FDD LTE小区搜索与跟踪源代码：https://github.com/JiaoXianjun/LTE-Cell-Scanner
因为HACKRF带宽可达20MHz，远高于rtl-sdr电视棒，因此有了HACKRF，将来就可能加入解码LTE SIB信息的功能（程序原来主要针对rtl-sdr电视棒设计，受限于rtl-sdr电视棒带宽，只能解码LTE MIB）
(发现SDR棒子现在有点像树莓派一样热闹，这里有一个覆盖HF的FPGA直采棒子： http://sdrstick.com/ )
视频演示：
（国内） http://v.youku.com/v_show/id_XNjk3Mjc1MTUy.html
（国外） http://www.youtube.com/watch?v=3hnlrYtjI-4
———-更新————
这里给出如何用C/C++直接编程调用hackrf： 使用C和C++直接调用HACKRF来支持LTE小区搜索(LTE Cell Scanner by HACKRF(C, C++))
小区扫描结果：
新增 2360MHz频点，亦庄：
Detected a TDD cell! At freqeuncy 2360MHz, try 0
cell ID: 30
PSS ID: 0
RX power level: -8.25803 dB
residual frequency offset: 33678.1 Hz
k_factor: 0.999984
Detected the following cells:
DPX:TDD/FDD; A: #antenna ports C: CP type ; P: PHICH duration ; PR: PHICH resource type
DPX CID A fc freq-offset RXPWR C nRB P PR CrystalCorrectionFactor
TDD 30 1 2360M 33.7k -8.26 N 100 N one 1.000014270593028165
在家碰到一次3 hits！
Hit PAR [12.2682]dB
PSS XCORR cost 9.21082s
Detected a FDD cell! At freqeuncy 1860MHz, try 0
cell ID: 86
PSS ID: 2
RX power level: -16.1312 dB
residual frequency offset: 24503.3 Hz
k_factor: 0.999986
Detected a FDD cell! At freqeuncy 1860MHz, try 0
cell ID: 142
PSS ID: 1
RX power level: -17.1019 dB
residual frequency offset: 24494.4 Hz
k_factor: 0.999986
Detected a FDD cell! At freqeuncy 1860MHz, try 0
cell ID: 48
PSS ID: 0
RX power level: -19.5743 dB
residual frequency offset: 24515.2 Hz
k_factor: 0.999986
Detected the following cells:
DPX:TDD/FDD; A: #antenna ports C: CP type ; P: PHICH duration ; PR: PHICH resource type
DPX CID A fc freq-offset RXPWR C nRB P PR CrystalCorrectionFactor
FDD 86 2 1860M 24.5k -16.1 N 100 N one 1.0000131739724291702
FDD 142 2 1860M 24.5k -17.1 N 100 N one 1.0000131692083715773
FDD 48 2 1860M 24.5k -19.6 N 100 N one 1.0000131804116960677