Title :
Redundancy allocation in turbo-equalizer design
Author :
Peacock, Matthew J M ; Collings, Iain B.
Author_Institution :
Sch. of Electr. & Inf. Eng., Univ. of Sydney, NSW, Australia
Abstract :
This paper considers properties of the extrinsic information transfer (EXIT) functions of turbo equalized intersymbol interference channels and finite-impulse response precoders. An analytic expression is derived for the maximum value of the EXIT function of the equalizer. Using this parameter, a design strategy is proposed for allocating redundancy between the equalizer and the decoder. The key quantities are pilot-symbol rate and code puncturing, for fixed overall data and symbol rates.
Keywords :
channel coding; equalisers; redundancy; telecommunication channels; transfer functions; turbo codes; code puncturing; extrinsic information transfer; finite-impulse response precoder; pilot-symbol rate; redundancy allocation; turbo equalized intersymbol interference channel; turbo-equalizer design; Analytical models; Australia; Bit error rate; Equalizers; Finite impulse response filter; Frequency; Intersymbol interference; Iterative decoding; Monte Carlo methods; Turbo codes; Extrinsic information transfer (EXIT) charts; turbo equalization;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2004.841984
