Pulse or digital communications – Testing – Data rate
Patent
1994-11-30
1998-09-01
Vo, Don N.
Pulse or digital communications
Testing
Data rate
375226, 375227, 370242, 370252, 371 204, 371 671, H04B 346, H04B 1700
Patent
active
058021051
ABSTRACT:
A system and method for testing signal transmission quality within a digital communication system is disclosed herein. The system may be incorporated within a digital cellular communication system in which information is exchanged over spread spectrum communication channels, among a plurality of mobile users, via at least one cell-site. The system contemplates testing a digital communication channel by transmitting a test sequence of digital data over the communication channel. The test sequence of digital data transmitted over the communication channel is received at a receiving station, within which is also generated a replica of the test sequence of digital data. The accuracy of transmission over the communication channel is then determined by comparing the replica of the test sequence of digital data to the test sequence of data received over the communication channel. The system allows the test sequence of digital data to be transmitted at one of a set of known data rates, with the receive station being disposed to identify the data rate associated with each test sequence of digital data. In a preferred implementation transmission of the test sequence involves generating a first plurality of data packets, which collectively comprise the test sequence of digital data. Each data packet is assigned one of a multiplicity of data rates in accordance with a first pseudorandom process, and is then transmitted at the data rate assigned thereto.
REFERENCES:
patent: 4663766 (1987-05-01), Bremer
patent: 5054035 (1991-10-01), Tarallo et al.
patent: 5157651 (1992-10-01), Ghelberg et al.
Bayley Gwain
Jou Yu-Cheun
Tiedemann Jr. Edward G.
Weaver, Jr. Lindsay A.
English Sean
Miller Russell B.
Qualcomm Incorporated
Vo Don N.
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