Skip to main content

Telecommunications Research in the United States and Selected Foreign Countries: a Preliminary Survey. Report to the National Science Foundation (1973) / Chapter Skim
Currently Skimming:

MISCELLANEOUS
Pages 211-221

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 211...
... and NASA, one is impressed by the sheer magnitude of the effort being sponsored by these agencies. When one adds to this the extensive basic and applied research effort at Bell Laboratories and the research and development programs of the independent laboratories, it would appear that telecommunications research in the United States is being carried on at a very substantial level.
Read the entire page →
From page 212...
... We need methods of ensuring accuracy of transmission, including error detection and retransmission and forward error correction. Emphasis should be on simple methods that can be implemented easily and economically on a computer.
Read the entire page →
From page 213...
... The new class consists of a series of equispaced dielectric frames only slightly larger than the beam cross section. Experimental tests show a measured attenuation about one-half of that for an iris waveguide having the same cell sizes.
Read the entire page →
From page 214...
... Faculty salaries can be paid largely from University funds, but support for research equipment and research assistants must come from Federal or industrial sources. Funding of modest telecommunications research grants by NSF, for example, could have a marked beneficial effect on the output of telecommunications engineers.
Read the entire page →
From page 215...
... Data Traffic Organization and Message Switching Another technique of interest is "saturation routing" in which the telecommunication system is probed for open pathways between signal source and the signal recipient. The algorithms for this dynamic relocation of transmission paths in a large communication network do require research.
Read the entire page →
From page 216...
... Pulse Code Modulation Of particular importance these days is the synchronization of pulse code modulation systems for mobile platforms, particularly aircraft.
Read the entire page →

Key Terms

  • modulation methods
  • efficient modulation
  • pulse code
  • code modulation
  • transmission facilities

  • telecommunications engineers
  • bell laboratories
  • message switching
  • electrical engineering
  • data traffic

  • electromagnetic environment
  • traffic organization
  • reduced attenuation
  • millimeter wave
  • typical television

  • signal recipient
  • message flow
  • error correction
  • transmission paths
  • industrial laboratory

  • miniscule compared
  • compress typical
  • communication network
  • dynamic performance
  • domain multiplex

  • particularly aircraft
  • priate research
  • mobile platforms
  • faculty competence
  • equispaced dielectric


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.