TM4 and verify if any additional gain/penatly is needed.

Going back to fixed shift in log2_approx for TM4. Playing with computing the channel average in order to find optimal shift.

2.Fixing shift LUT for TM1. Mcs 21, 26 and 28 show erroneous performance. (see attachement in commit)

to be completed in the next commit.

Introducing different shifts for channel compensation log2_maxh0 and log2_maxh1 as well as mcs-dependent offset coefficients interf_unaw_shift_mcs
for I-UA receiver and interference-free case TM4. Coeeficients for 64 QAM must be revised.

Introducing an offset for I-UA receiver intefr_unaw_shift and calibrating this value for each mcs (u=0 only).

Small changes in dlsch_demodulation.c and in dlsim.c condition to stop simulation depending on rx_type.
dr_offset must be calibrated for tm4 again.

1. Fixing precoder selection criteria for TM4 for tpmi2.
TPMI 2 works now.
2. Temporarily replacing abstraction.c with an old version till fix the bug in init_freq_channel.
3. Commenting some extra printouts.

commiting changes from svn branch SIC-receiver from revision 6836 to 7896 (current svn head). See svn log for details.

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7885 818b1a75-f10b-46b9-bf7c-635c3b92a50f

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7809 818b1a75-f10b-46b9-bf7c-635c3b92a50f

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7800 818b1a75-f10b-46b9-bf7c-635c3b92a50f

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7743 818b1a75-f10b-46b9-bf7c-635c3b92a50f

modifications in UE system information handling to allow for decoding of all SIBs. For USRP targets, timing advance and TX power control.

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7563 818b1a75-f10b-46b9-bf7c-635c3b92a50f

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7543 818b1a75-f10b-46b9-bf7c-635c3b92a50f

Applied S. Held's patches 16, additional modifications for UE frequency scanning and RSRP/RSSI calibration for ExpressMIMO2 and USRP B210

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7536 818b1a75-f10b-46b9-bf7c-635c3b92a50f

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7347 818b1a75-f10b-46b9-bf7c-635c3b92a50f

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7335 818b1a75-f10b-46b9-bf7c-635c3b92a50f

updated in dlsch_channel_compensation_TM3: inlining precoder and energy computation out of PRB loop (very bad performance bug)

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7203 818b1a75-f10b-46b9-bf7c-635c3b92a50f

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7147 818b1a75-f10b-46b9-bf7c-635c3b92a50f

added some SIMD code for ARM NEON in dlsch_demodulation.c, doesn't affect x86, still untested on ARM

git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7143 818b1a75-f10b-46b9-bf7c-635c3b92a50f