Timesharing without synchronizationThe capacity region of a multiple-access channel has recently been identified as the convex hull (barred K) of a certain set (K) of points in the first quadrant of the (R1,R2) plane. For a pair of rates in K, a more or less standard random-coding argument can be used to show the existence of a good pair of codes. But for points in barred K-K, it is apparently necessary for the two senders to use some form of time sharing to achieve the desired rates. However, in order to share time, at least one of the senders must have knowledge of the other's phase; and in many practical situations this knowledge does not exist. This paper investigates the problems which arise in coding for multiple-access channels when the senders cannot synchronize with each other.
Document ID
19770067000
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Mceliece, R. J. (Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Rubin, A. L. (California Institute of Technology, Jet Propulsion Laboratory, Pasadena Calif., United States)