Pulse or digital communications – Repeaters – Testing
Patent
1996-06-07
1999-07-20
Chin, Stephen
Pulse or digital communications
Repeaters
Testing
370208, 370209, H04B 1500
Patent
active
059265000
ABSTRACT:
A novel and improved method and apparatus for high rate CDMA wireless communication is described. In accordance with one embodiment of the invention, a set of individually gain adjusted subscriber channels are formed via the use of a set of orthogonal subchannel codes having a small number of PN spreading chips per orthogonal waveform period. Data to be transmitted via one of the transmit channels is low code rate error correction encoded and sequence repeated before being modulated with one of the subchannel codes, gain adjusted, and summed with data modulated using the other subchannel codes. The resulting summed data is modulated using a user long code and a pseudorandom spreading code (PN code) and upconverted for transmission. The use of the short orthogonal codes provides interference suppression while still allowing extensive error correction coding and repetition for time diversity to overcome the Raleigh fading commonly experienced in terrestrial wireless systems. In the exemplary embodiment of the invention provided, the set of sub-channel codes are comprised of four Walsh codes, each orthogonal to the remaining set and four chips in duration. The use of four sub-channels is preferred as it allows shorter orthogonal codes to be used, however, the use of a greater number of channels and therefore longer codes is consistent with the invention. In a preferred exemplary embodiment of the invention, pilot data is transmitted via a first one of the transmit channels and power control data transmitted via a second transmit channel. The remaining two transmit channels are used for transmitting non-specified digital data including user data or signaling data, or both. In an exemplary embodiment, one of the two non-specified transmit channels is configured for BPSK modulation and transmission over the quadrature channel.
REFERENCES:
patent: 2562180 (1951-07-01), Foley
patent: 3169171 (1998-02-01), Wachs et al.
patent: 3310631 (1967-03-01), Brown
patent: 3715508 (1973-02-01), Blasbalg
patent: 3795864 (1974-03-01), Fulton, Jr.
patent: 3959726 (1976-05-01), Hinoshita et al.
patent: 4002991 (1977-01-01), Ogita
patent: 4017798 (1977-04-01), Gordy et al.
patent: 4020461 (1977-04-01), Adams et al.
patent: 4048563 (1977-09-01), Osborne
patent: 4052565 (1977-10-01), Baxter et al.
patent: 4092601 (1978-05-01), Lee et al.
patent: 4100376 (1978-07-01), Woythaler
patent: 4121159 (1978-10-01), Lampert
patent: 4152651 (1979-05-01), Lampert et al.
patent: 4164628 (1979-08-01), Ward et al.
patent: 4179658 (1979-12-01), Bitzer
patent: 4188580 (1980-02-01), Nicolai et al.
patent: 4189677 (1980-02-01), Cooper et al.
patent: 4193031 (1980-03-01), Cooper et al.
patent: 4203070 (1980-05-01), Bowles et al.
patent: 4203071 (1980-05-01), Bowles et al.
patent: 4217586 (1980-08-01), McGuffin
patent: 4222115 (1980-09-01), Cooper et al.
patent: 4247939 (1981-01-01), Stromswold et al.
patent: 4276646 (1981-06-01), Haggard et al.
patent: 4287577 (1981-09-01), Deal, Jr.
patent: 4291409 (1981-09-01), Weinberg et al.
patent: 4291410 (1981-09-01), Caples et al.
patent: 4301530 (1981-11-01), Gutleber
patent: 4308617 (1981-12-01), German, Jr.
patent: 4309769 (1982-01-01), Taylor, Jr.
patent: 4313211 (1982-01-01), Leland
patent: 4361890 (1982-11-01), Green, Jr. et al.
patent: 4361891 (1982-11-01), Lobenstein et al.
patent: 4365327 (1982-12-01), Pirani
patent: 4394760 (1983-07-01), Kammerlander
patent: 4398289 (1983-08-01), Schoute
patent: 4434323 (1984-02-01), Levine et al.
patent: 4451916 (1984-05-01), Casper et al.
patent: 4460992 (1984-07-01), Gutleber
patent: 4472815 (1984-09-01), Gutleber
patent: 4484335 (1984-11-01), Mosley et al.
patent: 4501002 (1985-02-01), Auchterlonie
patent: 4512024 (1985-04-01), Gutleber
patent: 4536875 (1985-08-01), Kume et al.
patent: 4551853 (1985-11-01), Demen et al.
patent: 4559633 (1985-12-01), Kan et al.
patent: 4561089 (1985-12-01), Rouse et al.
patent: 4567588 (1986-01-01), Jerrim
patent: 4601047 (1986-07-01), Horowitz et al.
patent: 4607375 (1986-08-01), Lee
patent: 4621365 (1986-11-01), Chiu
patent: 4630283 (1986-12-01), Schiff
patent: 4635221 (1987-01-01), Kerr
patent: 4649549 (1987-03-01), Halpern et al.
patent: 4665514 (1987-05-01), Ching et al.
patent: 4669089 (1987-05-01), Gahagan et al.
patent: 4672658 (1987-06-01), Kavehrad et al.
patent: 4688035 (1987-08-01), Gray et al.
patent: 4703474 (1987-10-01), Foschini et al.
patent: 4730340 (1988-03-01), Frazier, Jr.
patent: 4754450 (1988-06-01), Lynk, Jr. et al.
patent: 4785463 (1988-11-01), Janc et al.
patent: 4809295 (1989-02-01), Zscheile, Jr. et al.
patent: 4813040 (1989-03-01), Futato
patent: 4843612 (1989-06-01), Brusch et al.
patent: 4872200 (1989-10-01), Jansen
patent: 4894842 (1990-01-01), Broekhoven et al.
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 4933952 (1990-06-01), Albrieux et al.
patent: 4939745 (1990-07-01), Kirimoto et al.
patent: 4942591 (1990-07-01), Nease et al.
patent: 4951150 (1990-08-01), Iwasaki
patent: 4953178 (1990-08-01), Ishigaki
patent: 4958359 (1990-09-01), Kato
patent: 4962507 (1990-10-01), Renshaw
patent: 4980897 (1990-12-01), Decker et al.
patent: 5003533 (1991-03-01), Watanabe
patent: 5005169 (1991-04-01), Bronder et al.
patent: 5022046 (1991-06-01), Morrow, Jr.
patent: 5056109 (1991-10-01), Gilhousen et al.
patent: 5068849 (1991-11-01), Tanaka
patent: 5091940 (1992-02-01), Clebowicz
patent: 5101501 (1992-03-01), Gilhousen et al.
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5109390 (1992-05-01), Gilhousen et al.
patent: 5136586 (1992-08-01), Greenblatt
patent: 5150387 (1992-09-01), Yoshikawa et al.
patent: 5177767 (1993-01-01), Kato
patent: 5199045 (1993-03-01), Kato
patent: 5204876 (1993-04-01), Bruckert et al.
patent: 5212684 (1993-05-01), MacNamee et al.
patent: 5218639 (1993-06-01), Osterweil
patent: 5258983 (1993-11-01), Lane et al.
patent: 5260969 (1993-11-01), Kato et al.
patent: 5274836 (1993-12-01), Lux
patent: 5309474 (1994-05-01), Gilhousen et al.
patent: 5341396 (1994-08-01), Higgins et al.
patent: 5365543 (1994-11-01), Takahashi et al.
patent: 5416797 (1995-05-01), Gilhousen et al.
patent: 5418813 (1995-05-01), Scaffner et al.
patent: 5442625 (1995-08-01), Gitlin et al.
patent: 5455841 (1995-10-01), Hazu
patent: 5550809 (1996-08-01), Bottomley et al.
patent: 5619526 (1997-04-01), Kim et al.
patent: 5623485 (1997-04-01), Bi
"A Spread-Spectrum Technique for High-Capacity Mobile Communications" George R. Cooper et al., IEEE Transaction on Vehicular Technology, vol. VT-27, No. 4, Nov. 1978, 12 pages.
"Cellular Land-Mobile Radio: Why spred Spectrum?", George R. Cooper et al., IEEE Communications Magazine, Mar. 1979, pp. 278-285.
"Multiple Access to a Communications Satellite with Hard-Limiting Repeater", J.M. Aein et al., IDA, vol. II, Apr. 1965, 10 pages.
"Shift Register Sequences" Holden-Day, Inc. Solomon W. Golomb, pp. 192-197.
"An Annotated History of Codorac: 1953-1958", E. Rechtin, Jet Propulsion Laboratory, Jul. 9, 1981, Report No. 20-120, pp. 1-22.
"Spread Spectrum Communications", Marvin K. Simon et al. Computer Science Press, vol. I, 1985, pp. 98-104.
"Walsh Function Generator for a Millionn Different Functions", Fredick J. Lebert Applications of Walsh Functions, 1970, pp. 52-54.
Digital Generation of Walsh Functions for Orthogonal Multiplexing Application Jhong S. Lee, Application of Walsh Functions, pp. 222-227.
"Sequential Circuits and Walsh Functions", Philipp W. Besslich, Applications of Walsh Functions, 1974, pp. 154-157.
"Binary Logic Walsh Function Generator", H.H. Nick, IBM Technical Disclosure Bulleti, vol. 22 No. 10, Mar. 1980, pp. 4650-4651.
"On Interference Suppression Using Complementary filters in DS-DSS" Bong Woon Lee et al., IEEE, vol. 2, 1989, pp. 0486-0490.
"Nonlinear Estimation of PSK-Modulation Carrier Phase with Application to Burst Digital Transmission", Andrew J. Viterbi et al. IEEE Transaction on Information Theory, vol. IT-29, No. Jul. 4, 1983, pp. 543-551.
"Spectral Efficiency in Cellular Land-Mobile Communications: A Spread Spectrum Approach", Nettleton, Raymond W., U-M-I dissertation Information Service, 1978.
"Power Cont
Chin Stephen
Greenhaus Bruce W.
Miller Russell B.
Qualcomm Incorporated
Roundtree Joseph
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