http://iet.metastore.ingenta.com
1887

Upper bound for signal/noise ratio for instantaneously companded delta-modulation systems

Upper bound for signal/noise ratio for instantaneously companded delta-modulation systems

For access to this article, please select a purchase option:

Buy article PDF
$19.95
(plus tax if applicable)
Buy Knowledge Pack
10 articles for $120.00
(plus taxes if applicable)

IET members benefit from discounts to all IET publications and free access to E&T Magazine. If you are an IET member, log in to your account and the discounts will automatically be applied.

Learn more about IET membership 

Recommend Title Publication to library

You must fill out fields marked with: *

Librarian details
Name:*
Email:*
Your details
Name:*
Email:*
Department:*
Why are you recommending this title?
Select reason:
 
 
 
 
 
Electronics Letters — Recommend this title to your library

Thank you

Your recommendation has been sent to your librarian.

Instantaneously companded delta modulators are able to produce a wide range of step changes in the feedback waveform, and the step change can vary by substantial amounts between adjacent clock periods. In spite of this ability, the peak s.n.r.s achieved by these modulation systems are not substantially greater than those of the linear delta-modulation ones. To assess the potential of instantaneously companded delta-modulation systems, an optimum one is considered, and its s.n.r. as a function of clock rate is compared with those of the linear and 2nd-order constant-factor delta-modulation codecs. It is shown that the optimum codec has much the larger s.n.r., but exchanges this s.n.r. for increasing channel bit rate in a way similar to that of the linear delta-modulation system.

References

    1. 1)
      • R. Steele . (1975) , Delta modulation systems.
    2. 2)
      • F. Bertora . Short memory adaptive delta modulation. Alta Freq. , 974 - 979
    3. 3)
      • A.T. Kyaw , R. Steele . Constant-factor delta modulator. Electron. Lett. , 96 - 97
    4. 4)
      • M. Passot , R. Steele . Application of the normal spectrum technique to the calculation of distortion noise in delta modulators. Radio & Electron. Eng. , 10
    5. 5)
      • J.B. O'Neal . Delta modulation quantization noise analytical and computer simulation results for Gaussian and television signals. Bell Sym.Tech. J. , 117 - 141
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19750111
Loading

Related content

content/journals/10.1049/el_19750111
pub_keyword,iet_inspecKeyword,pub_concept
6
6
Loading
This is a required field
Please enter a valid email address