Title :
Stable pole-zero modeling of long FIR filters with application to the MMSE-DFE
Author :
Al-Dhahir, Naofal ; Sayed, Ali H. ; Cioffi, John M.
Author_Institution :
Corp. Res. & Dev., Gen. Electr. Co., Schenectady, NY, USA
fDate :
5/1/1997 12:00:00 AM
Abstract :
The problem of approximating a long FIR filter by a reduced-parameter stable pole-zero filter is addressed. We derive a computationally efficient order-recursive algorithm that achieves this task with high accuracy. Our main emphasis is on applying this algorithm to reduce the implementation complexity of the decision feedback equalizer´s long FIR feedforward and feedback filters encountered in high-speed data transmission on digital subscriber loops
Keywords :
FIR filters; data communication; decision feedback equalisers; feedforward; filtering theory; poles and zeros; recursive estimation; subscriber loops; MMSE-DFE; computationally efficient order-recursive algorithm; decision feedback equalizer; digital subscriber loops; high accuracy; high-speed data transmission; implementation complexity reduction; long FIR feedforward filters; reduced-parameter stable pole-zero filter; stable pole-zero modeling; Costs; DSL; Data communication; Decision feedback equalizers; Digital filters; Digital signal processors; Feedback loop; Finite impulse response filter; IIR filters; Signal processing algorithms;
Journal_Title :
Communications, IEEE Transactions on
