Title:
【発明の名称】同一チャンネル信号のジョイント検出による干渉緩和
Document Type and Number:
Japanese Patent JP2001501055
Kind Code:
A
Abstract:
A digital information bit that has been encoded and transmitted as a first modulated signal from a first transmitter in the presence of a second modulated signal that has been transmitted by a second transmitter is received and decoded by receiving a composite signal that is a sum of the first modulated signal and the second modulated signal. The composite signal is processed to generate a complex numerical sample. Then, a plurality of bit pairs are hypothesized, wherein each hypothesized bit pair includes a hypothesized first information bit encoded and transmitted by the first transmitter and a hypothesized second information bit encoded and transmitted by the second transmitter. For each of the plurality of hypothesized bit pairs, a path metric is generated that is indicative of a likelihood that information sequence estimates are accurate estimates, wherein the information sequence estimates include the hypothesized first and second information bits. For each of the plurality of hypothesized bit pairs, the generated path metric is added to a previously determined cumulative path metric to generate a most recent cumulative path metric. An information sequence estimate is selected that has a lowest most recent cumulative path metric, wherein the selected information sequence estimate includes an information sequence estimated to have been encoded and transmitted by the first transmitter and an information sequence estimated to have been encoded and transmitted by the second transmitter.
Inventors:
Dent, Paul, W.
Bottomry, Gregory, Yi.
Bottomry, Gregory, Yi.
Application Number:
JP51472398A
Publication Date:
January 23, 2001
Filing Date:
September 12, 1997
Export Citation:
Assignee:
Ericsson Incorporated
International Classes:
H01Q1/24; H01Q21/08; H01Q21/28; H03M13/00; H03M13/27; H03M13/41; H03M13/35; H03M13/45; H04B7/08; H04B7/10; H04B7/185; H04L1/00; H04L1/06; H04L25/03; H04L25/08; H04L27/00; H04W84/02; (IPC1-7): H03M13/41; H03M13/45; H04L25/08; H04L27/00
Attorney, Agent or Firm:
Akira Asamura (3 outside)