Beyond1/spl mu/m/sup 2/ high density recording with improved QAM technique

Masaaki Kobayashi,Etsuto Nakatsu,Hiroaki Shimazaki,Haruo Ohta,Y. Nagaoka

Beyond1/spl mu/m/sup 2/ high density recording with improved QAM technique

1991

Masaaki Kobayashi
Etsuto Nakatsu
Hiroaki Shimazaki
Haruo Ohta
Y. Nagaoka

A new QAM (Quadrature Amplitude Modulation) recording technique developed for digital VCRS is reported here. By using an improved coded 16-QAM method, a recording density as high as 0.95 /spl mu/m/sup 2/ /bit is accomplished on a conventional ME (Metal Evaporated) tape.

Keywords:

Quadrature modulation
Digital recording
Quadrature amplitude modulation
Electronic engineering
Pulse-amplitude modulation
Analog transmission
QAM
Computer science
Signal-to-noise ratio
Demodulation

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