Ofdm_channel_estimation
2016-08-23
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Application background
Using the LS estimator algorithm and forced zero crossing detection of the received signal; the LMMSE estimation algorithm and forced zero crossing detection received signal & nbsp; the low rank LMMSE estimation algorithm and forced zero crossing detection of the received signal.Key Technology
The simulation of carrier frequency of 2GHz, 1MHz bandwidth, sub carrier number 128 CP 16; sub carrier spacing for 7.8125kHz; a OFDM symbol length for 128us, CP length for 16us; using 16QAM modulation; maximum Doppler frequency for 132Hz; multipath channel for diameter, the power delay spectrum obey negative exponential distribution ~exp -t/trms, trms= (1 / 4) *cp. The path delay is delay=[0 2e-6 4e-6 8e-6 12e-6]matlab
OFDMchannelestimation
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