Multiplex communications – Communication over free space – Having a plurality of contiguous regions served by...
Reexamination Certificate
2005-01-25
2005-01-25
Duong, Frank (Department: 2666)
Multiplex communications
Communication over free space
Having a plurality of contiguous regions served by...
C370S342000
Reexamination Certificate
active
06847622
ABSTRACT:
A communication system provides multiple wireless services, each potentially having a different information bit rate. A transmitter (400, FIG.4) encodes (504, FIG.5) relatively low rate data (430, FIG.4) using code division multiple access (CDMA). The resulting spread data stream(s) (436, FIG.4) are multiplexed and modulated (506, 508, FIG.5) along with relatively high information rate, non-encoded data streams (440, FIG.4) using a time division multiple access/frequency division multiple access (TDMA/FDMA) protocol. In other embodiments, the methods and apparatus of the present invention can be used in a CDMA only system, or in a system using a time division multiplexing/FDMA and time division multiplexing/CDMA. In one embodiment, the spread data streams are transmitted in timeslots (211-214, FIG.2) and frequencies (201-204, FIG.2) that are interspersed between timeslots and frequencies used for the high rate data. A receiver (600, FIG.6) performs complementary demodulation (704, FIG.7), demultiplexing (706, FIG.7), and decoding (710, FIG.7).
REFERENCES:
patent: 5469468 (1995-11-01), Schilling
patent: 5729535 (1998-03-01), Rostoker et al.
patent: 5805581 (1998-09-01), Uchida et al.
patent: 6044073 (2000-03-01), Seshadri et al.
patent: 6130884 (2000-10-01), Sato
patent: 6154456 (2000-11-01), Rakib et al.
patent: 6208624 (2001-03-01), Tanno et al.
patent: 6289009 (2001-09-01), Sato
patent: 6510148 (2003-01-01), Honkasalo
patent: 6571369 (2003-05-01), Li
patent: 6674741 (2004-01-01), Rasanen
patent: 6735189 (2004-05-01), Kukla et al.
patent: 20010036174 (2001-11-01), Herring
patent: 20030013447 (2003-01-01), Persson et al.
Emmons, Jr. Thomas Peter
Peters Robert Anthony
Startup James
Bogacz Frank J.
Duong Frank
Moore, Jr. Michael J.
Motorola Inc.
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