Multiplex communications – Communication over free space – Combining or distributing information via code word channels...
Patent
1995-11-08
1999-01-12
Ton, Dang T.
Multiplex communications
Communication over free space
Combining or distributing information via code word channels...
375200, 455562, H04J 1302
Patent
active
058598421
ABSTRACT:
A receiver system for antenna diversity employing a single backhaul cable. A single backhaul cable couples a receiver to a plurality of antennas. The signals from the antennas are combined onto the single backhaul cable using frequency offsets, spread spectrum code division, time division, or a combination thereof. At the receiver, the signals from the antennas are decoupled. In the case of frequency offsets, the antenna signals are decoupled by splitting the backhaul signal into a plurality of duplicate signals, frequency shifting selected ones of the duplicate signals, and correlating said frequency shifted signals. In the case of spread spectrum code division, the antenna signals are decoupled by splitting the backhaul signal into a plurality of duplicate signals and demultiplexing each of the duplicate signals with a different spread spectrum code. One or more antennas may be selected for communication in response decoupling the antenna signals.
REFERENCES:
patent: 4189677 (1980-02-01), Cooper et al.
patent: 4222115 (1980-09-01), Cooper et al.
patent: 4285060 (1981-08-01), Cobb et al.
patent: 4291410 (1981-09-01), Caples
patent: 4301530 (1981-11-01), Gutleber
patent: 4314393 (1982-02-01), Wakatsuki et al.
patent: 4324001 (1982-04-01), Rhodes
patent: 4327438 (1982-04-01), Baier et al.
patent: 4338579 (1982-07-01), Rhodes
patent: 4418425 (1983-11-01), Fennel et al.
patent: 4423519 (1983-12-01), Bennett et al.
patent: 4455651 (1984-06-01), Baran
patent: 4481640 (1984-11-01), Chow et al.
patent: 4517679 (1985-05-01), Clark et al.
patent: 4550414 (1985-10-01), Guinone et al.
patent: 4561089 (1985-12-01), Rouse et al.
patent: 4563774 (1986-01-01), Gloge et al.
patent: 4567588 (1986-01-01), Jerrim
patent: 4587662 (1986-05-01), Langewellpott
patent: 4601047 (1986-07-01), Horwitz et al.
patent: 4606039 (1986-08-01), Nicolas et al.
patent: 4630283 (1986-12-01), Schiff
patent: 4641317 (1987-02-01), Fullerton
patent: 4647863 (1987-03-01), Skudera et al.
patent: 4649549 (1987-03-01), Halpern et al.
patent: 4660164 (1987-04-01), Leibowitz
patent: 4672658 (1987-06-01), Kavehrad et al.
patent: 4675863 (1987-06-01), Paneth et al.
patent: 4688210 (1987-08-01), Eizenhofer et al.
patent: 4691326 (1987-09-01), Tauchiya
patent: 4701904 (1987-10-01), Darcie
patent: 4703474 (1987-10-01), Foschini et al.
patent: 4707839 (1987-11-01), Andren et al.
patent: 4724435 (1988-02-01), Moses et al.
patent: 4736371 (1988-04-01), Tejima et al.
patent: 4754453 (1988-06-01), Eizenhofer
patent: 4759034 (1988-07-01), Nagazumi
patent: 4759078 (1988-07-01), Schiller
patent: 4774715 (1988-09-01), Messenger
patent: 4797947 (1989-01-01), Labedz
patent: 4804938 (1989-02-01), Rouse et al.
patent: 4807222 (1989-02-01), Amitay
patent: 4813057 (1989-03-01), Fullerton
patent: 4815106 (1989-03-01), Propp et al.
patent: 4817089 (1989-03-01), Paneth et al.
patent: 4837786 (1989-06-01), Gurantz et al.
patent: 4864589 (1989-09-01), Endo
patent: 4866732 (1989-09-01), Carey et al.
patent: 4894842 (1990-01-01), Brockhoven et al.
patent: 4901307 (1990-02-01), Gilhousen et al.
patent: 4905221 (1990-02-01), Ichiyoshi
patent: 4912705 (1990-03-01), Paneth et al.
patent: 4918689 (1990-04-01), Hui
patent: 4953197 (1990-08-01), Kaewell
patent: 4972431 (1990-11-01), Keegan
patent: 4984247 (1991-01-01), Kaufmann et al.
patent: 5005183 (1991-04-01), Carey et al.
patent: 5016255 (1991-05-01), Dixon et al.
patent: 5018165 (1991-05-01), Sohner et al.
patent: 5022024 (1991-06-01), Paneth et al.
patent: 5022047 (1991-06-01), Dixon et al.
patent: 5029184 (1991-07-01), Andren et al.
patent: 5056109 (1991-10-01), Gilhousen et al.
patent: 5063560 (1991-11-01), Yerbury
patent: 5073899 (1991-12-01), Collier et al.
patent: 5073900 (1991-12-01), Mallinkdrodt
patent: 5081642 (1992-01-01), O'Clock et al.
patent: 5093840 (1992-03-01), Schilling
patent: 5097484 (1992-03-01), Akaiwa
patent: 5101501 (1992-03-01), Gilhousen et al.
patent: 5103459 (1992-04-01), Gilhousen et al.
patent: 5109390 (1992-04-01), Gilhousen et al.
patent: 5119375 (1992-06-01), Paneth et al.
patent: 5121391 (1992-06-01), Paneth et al.
patent: 5146471 (1992-09-01), Cowart
patent: 5153598 (1992-10-01), Alves
patent: 5170412 (1992-12-01), Massey
patent: 5185610 (1993-02-01), Ward et al.
patent: 5206882 (1993-04-01), Scholemer
patent: 5210771 (1993-05-01), Schaeffer et al.
patent: 5218618 (1993-06-01), Sagey
patent: 5224120 (1993-06-01), Schilling
patent: 5228053 (1993-07-01), Miller et al.
patent: 5228056 (1993-07-01), Schilling
patent: 5231646 (1993-07-01), Heath et al.
patent: 5241690 (1993-08-01), Larsson et al.
patent: 5243622 (1993-09-01), Lux et al.
patent: 5257283 (1993-10-01), Gilhousen et al.
patent: 5265119 (1993-11-01), Gilhousen et al.
patent: 5267262 (1993-11-01), Wheatley
patent: 5274665 (1993-12-01), Schilling
patent: 5280472 (1994-01-01), Gilhousen et al.
patent: 5280537 (1994-01-01), Sugiyama et al.
patent: 5289497 (1994-02-01), Jacobson et al.
patent: 5291515 (1994-03-01), Uchida et al.
patent: 5299226 (1994-03-01), Schilling
patent: 5347535 (1994-09-01), Karasawa et al.
patent: 5351269 (1994-09-01), Schilling
patent: 5383219 (1995-01-01), Wheatley et al.
patent: 5392459 (1995-02-01), Baba et al.
patent: 5402413 (1995-03-01), Dixon
patent: 5410568 (1995-04-01), Schilling
patent: 5414728 (1995-05-01), Zehavi
patent: 5446756 (1995-08-01), Mallinckrodt
patent: 5481570 (1996-01-01), Winters
patent: 5515378 (1996-05-01), Roy, III et al.
patent: 5548819 (1996-08-01), Robb
Mohsen Kavehrad et al., Direct Sequence Spread Spectrum with DPSK Modulation and Diversity for Indoor Wireless Communications, IEEE Transactions on Communications, Feb. 1987, vol. COM-35, No. 2, pp. 224-226.
Payne Freret, Wireless Terminal Communications Using Spread-Spectrum Radio, Proceedings of the IEEE, 1980, pp. 244-248.
M. Kavehrad and P.J. McLane, Performance of Low Complexity Channel Coding and Diversity for Spread Spectrum in Indoor, Wireless Communication, AT&T Technical Journal, vol. 64, No. 8, Oct. 10985, pp. 1927-1965.
Kavehrad, M. and McLane, P.J., Spread Spectrum for Indoor Digital Radio, IEEE Communications Magazine, Jun. 1987, vol. 25, No. 5, at 32-40.
J.H. Collins & P.M. Grant, The Role of Surface Acoustic Wave Technology in Communication Systems, Ultrasonics, Mar. 1972, vol. 10, No. 2, pp. 59-71.
Jurg Ruprecht, Code Time Division Multiple Access: A Method for the Orthogonalization of CDMA Signals in Multipath Environment, Aachener Kolloquium "Signaltheorie", Mobile Kommunikationsystems, Mar. 1994, pp. 1-8.
Adel A.M.Saleh et al., An Experimental TDMA Indoor Radio Communications System Using Slow Frequency Hopping and Coding, IEEE Transactions on Communications, Jan. 1991, vol. 39, No. 1, pp. 152-161.
Roger D. Colvin, Correlators and Convolvers Used In Spread Spectrum Systems, National Telecommunications Conference, Conference Record vol. 1 of 4, 1982, pp. 22.4.1-22.4.5.
Rodger E. Ziemer, Carl R. Ryan and James H. Stilwell, Conversion and Matched Filter Approximations for Serial Minimum-Shift Keyed Modulation, IEEE Transactions on Communications, vol. Com. 30, No. 3, Mar. 1982, pp. 495-509.
Manfred G. Unkauf, Surface Wave Devices in Spread Spectrum Systems, Surface Wave Filters (Wiley 1977), pp. 477-509.
Marvin N. Cohen, Marshall R. fox, and J. Michael Baden, Minimum Peak Sidelobe Pulse Compression Codes, IEEE International Radar Conference, 1990, pp. 633-638.
Colin K. Campbell, Applications of Surface Acoustics and Shallow Bulk Acoustic Wave Devices, Proceedings of the IEEE, Oct. 1989, pp. 1453-1484.
Dixon, Robert C., Spread Spectrum Systems, (J. Wiley & Sons, 2ed. 1984).
Mohanty, Nirode C., Spread Spectrum and Time Division Multiple Access Satellite Communications, Transactions on Communications, vol. Com-25, No. 8, Aug. 1977, pp. 810-815.
In the Matter of: Amendment of the Commission's Rules to Establish New Personal Communications Services Tentative Decision and Memorandum Opinion and Order Released: Nov. 6, 1992.
Joint Technical Committee on Wireless Access--JTC(Air) Standards Contribution (Air Interface Standards Project) Date: Mar. 21, 1994.
Omnipoint Corporation--FCC Experimental Lice
Omnipoint Corporation
Ton Dang T.
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