Merge pull request #4 from libLTE/master

Merge with master fork
Added Test and Benchmark for soft_demodulation approximation algorithms
Added volk'ed version of llr_approx
Test wasn't added
Adjusted PSS find thresholds for loaded cells
Merge branch 'soft_demod_volk'
Added CRC-based early stopping to Turbo decoder
Normalized PSS correlation result. Use real part only. Extended sync_test to more bandwidth
Added UE cell search object. Improved PSS detection
Improved cell search program
Changed CP detection algorithm
Cell search example looks for 3 cells per frequency
Fixed some bugs in UE PDSCH example: equalization with zero channel estimates, cell search, synchronization. CRC-based early stopping
Merge pull request #47 from ismagom/master

Fixed problems with PDSCH UE example and synchronization.