Abstract
Although information storage devices have increasingly faster data transfer rates and higher storage capacities at a lower cost, equalizing such devices often causes serious noise enhancement. Therefore, this work presents a novel equalization method capable of reducing serious noise enhancement and also combating the intersymbol interference (ISI) effects. The equivalent channel which combines the storage channel response and the power spectral density of the recorded run-length-limited (RLL) sequences is equalized to a desired response with cutoff frequency @Wc, where the determination of @Wc compromises noise enhancement and ISI. Two quantified values, SNRo(@Wc) and RISI(@Wc), related to noise enhancement and ISI respectively are derived to explicitly determine @Wc. In addition, the type II filter is demonstrated to be best suited for implementing the proposed equalizer. The readback signal from a digital versatile disk (DVD) is obtained and simulated. Simulation results indicate that the noise enhancement of the proposed equalization method is significantly reduced over that of the conventional one.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
