Title :
FFT-based block sequential least squares adaptive FIR equalizer for terrestrial HDTV broadcasting
Author :
Hu, Xiao-Yu ; Yu, Xiao-Hu ; Zha, Chun-Ming
Author_Institution :
Nat. Commun. Res. Lab., Southeast Univ., Nanjing, China
fDate :
5/1/1997 12:00:00 AM
Abstract :
We present an FFT-based block sequential least squares adaptive FIR equalizer for terrestrial HDTV broadcasting. This equalizer provides fast convergent rate as well as good numerical stability. Of great significance is its drastic reduction in computational complexity by means of efficient FFT technology and block operation. Simulation results show that the equalizer achieves almost 2.5 dB SNR improvement at a bit error rate of 3×10-6 with almost the same computational complexity relative to the LMS decision feedback equalizer (DFE) recommended by the Grand Alliance
Keywords :
FIR filters; adaptive equalisers; computational complexity; fast Fourier transforms; high definition television; least squares approximations; numerical stability; television broadcasting; BER; FFT technology; FFT-based block sequential least squares; Grand Alliance; LMS decision feedback equalizer; SNR; adaptive FIR equalizer; bit error rate; block operation; computational complexity reduction; fast convergent rate; numerical stability; simulation results; terrestrial HDTV broadcasting; Bit error rate; Broadcasting; Computational complexity; Computational modeling; Decision feedback equalizers; Finite impulse response filter; HDTV; Least squares approximation; Least squares methods; Numerical stability;
Journal_Title :
Consumer Electronics, IEEE Transactions on
