×

METHOD AND APPARATUS FOR MULTIPLE ACCESS OVER A COMMUNICATION CHANNEL

  • US 20090161732A1
  • Filed: 01/21/2009
  • Published: 06/25/2009
  • Est. Priority Date: 08/13/1999
  • Status: Active Grant
First Claim
Patent Images

1. A method for communication of digital data from a plurality of independent transmitters to a common receiver, the method comprising:

  • modulating data bursts at the transmitters into symbols;

    spreading the symbols using a single common spreading code at a single common rate according to direct sequence spread spectrum signaling to obtain spread spectrum symbols, wherein said single common spreading code has a duration longer than the longest data burst that can be transmitted;

    transmitting the bursts of the spread spectrum symbols from the transmitters on a single shared asynchronous random access channel; and

    receiving the bursts on at the single common receiver wherein multiple bursts may overlap in time and wherein two transmission bursts collide only if the received bursts are separated by less than the duration of a single chip of said single common spreading code.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×