Hi all,
I run the example found in the ~/prefix/share/gnuradio/examples/digital/ofdm/rx_ofdm.grc. The ofdm signals can be decoded correctly. But I don't understand the channel taps.
The channel taps are shown to be
Key: ofdm_sync_chan_taps Value: #[(0,0) (0,0) (0,0) (0,0) (0,0) (0,0) (64.2159,-3.65375) (47.2264,-42.4505) (8.44977,-62.8107) (-32.7931,-54.5247) (-59.9085,-21.3488) (-59.8031,23.3288) (-32.3382,55.4137) (9.05079,63.8184) (46.331,42.7923) (65.1778,2.83559) (51.1081,-38.6363) (15.815,-62.1237) (-27.1419,-57.8722) (-58.2753,-27.4043) (-62.3711,15.658) (-37.9986,51.1873) (3.2302,64.2116) (5.44772,5.36124) (6.75629,1.41069) (54.079,-33.4137) (2.19591,-6.12473) (-1.91544,-6.56722) (-5.87699,-3.166) (-6.83039,0.994718) (-4.49682,5.42143) (-0.363706,6.79664) (0,0) (6.653,1.39701) (6.73628,-2.57781) (2.83963,-6.40383) (-1.3027,-7.62756) (-5.2442,-4.20318) (-7.30496,-0.464149) (-46.0595,43.0102) (-1.1131,6.52395) (3.28888,5.98481) (6.67649,1.87579) (6.12278,-2.4737) (3.20924,-5.88361) (-1.73027,-7.05576) (-5.08706,-4.94171) (-6.68616,-0.0110321) (-5.45217,3.92032) (-1.28323,7.08399) (3.24904,6.21134) (6.67752,2.90531) (7.18779,-1.51598) (36.8116,-51.7724) (0.146267,-7.00651) (-4.51996,-4.89137) (-7.37838,-1.41322) (-6.20339,3.98806) (-2.49422,6.80633) (0,0) (0,0) (0,0) (0,0) (0,0)]
This is weired. The channel is just AWGN. Why are not the channel taps 1?
I'm running GNU Radio Companion 3.7.12 by the way. The example can be found in the attachment.
Regards,
Edwin
rx_ofdm.grc