12,846 research outputs found
Letter from R. D. Steele, Brooklyn, New York, to W. H. Davis and Son, Newburyport, Massachusetts, September 8, 1891
No full textA letter from Steele in Brooklyn, New York, to W. H. Davis and Sons in Newburyport, Massachusetts. Captain Steele is inquiring about the patent for the new reef ring Davis invented for boating
[Typed Statement by D. F. Steele]
No full textTyped statement by D. F. Steele concerning officer's assignments, the murder of Lee Harvey Oswald, and familiarity with Jack Ruby
Personal Correspondence on Hotel Seminole Stationary, John D. Cappleman, Allen D. Steele; September 25, 1929
No full textPersonal Correspondence on Hotel Seminole Stationary, John D. Cappleman, Allen D. Steele; September 25, 192
[Statement by D. F. Steele, concerning the murder of Lee Harvey Oswald]
No full textStatement by D. F. Steele concerning officer's assignment, the murder of Lee Harvey Oswald, and familiarity with Jack Ruby
[Report from D. F. Steele to Chief J. E. Curry, November 26, 1963]
No full textReport from D. F. Steele to Chief J. E. Curry, concerning officer's assignments at the time of the murder of Lee Harvey Oswald. Steele describes his duties and observations in and around the City Hall
Postcard from J. D. Steele, Jr., Laurel, Mississippi, to Miss Ruth and Elizabeth Allen Steele, Eutaw, Alabama, February 14, 1918
No full textLetter from G. M. Hanson to Wm. P. Dole with letter from E. Steele, 1864
No full textEnclosed letter from E. Steele to D. E. Hamblin relative to payment for the cattle furnished by him, and urges the settlement be made by Steele
On the Computation of 16-QAM and 64-QAM Performance in Rayleigh-Fading Channels
No full textSUMMARY Quadrature Amplitude Modulation (QAM) schemes are attractive in terms of bandwidth efficiency and offer a number of subchannels with different integrities via both Gaussian and Rayleigh-fading channels, Specifically, the 16-QAM phasor constellation has two, while the 64-QAM possesses three such subchannels, which become dramatically different via Rayleigh-fading channels. The analytically derived bit error rate (BER) formulae yield virtually identical curves with simulation results, exhibiting adequate BERs for the highest integrity subchannels of both 16-QAM and 64-QAM to be further reduced by forward error correction coding (FEC). However, the BERs of the lower integrity subchannels require fading compensation to reduce their values for FEC techniques to become effective. This property creates ground for a variety of carefully matched, embedded mobile transmission schemes of different complexities. The practical implementation of such an embedded scheme is demonstrated by a low-cost, low-complexity and low consumption 50 kBd mobile video telephone scheme offering adequate speech and image quality for channel SNRs in excess of about 20 dB via Rayleigh-fading channels. key words: QAM theory; modulation for microcellular fading channels
[Captain R. D. Steele]
No full textPhotograph of an elderly man, identified as R. D. Steele, one of the first pilots in Sabine Pass. He is seated and holding a pair of glasses. His hair is white and he is looking toward the camera
R. D. Steele Letter, MSS.2264
No full textAbstract: Letter from Steele in Brooklyn, New York, to W. H. Davis and Son in Newburyport, Massachusetts. Captain Steele is inquiring about the patent for the new reef ring Davis invented for boating.Scope and Content Note: Letter from Steele in Brooklyn, New York, to W. H. Davis and Son in Newburyport, Massachusetts. Captain Steele is inquiring about the patent for the new reef ring Davis invented for boating.Biographical/Historical Note: R. D. Steele lived in Brooklyn, New York. W. H. Davis and Son was located in Newburyport, Massachusetts
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