Title:
ADAPTIVE INTERFERENCE CANCELLATION RECEIVER
Document Type and Number:
Japanese Patent JP3256646
Kind Code:
B2
Abstract:
PURPOSE: To eliminate an equi-level interference signal and an unknown interference signal.
CONSTITUTION: Transversal filters FFF1-FFFNB apply weighting to received signals by antennas 1-1 to 1-NB and a synthesis means 3 synthesizes the weighted signals and an error estimate means 4 subtracts an estimated desired signal and an estimated interference signal from the synthesis signal to obtain a likelihood from the estimated error, and a state estimate means 6 estimates a desired signal series and an interference signal series by taking a state transition into account. Furthermore, a desired signal estimate means 8 and interference signal estimate means 7-1 to 7-N generate an estimate desired signal and an estimate interference signal and a parameter control means 9 update each tap coefficient of the estimate means 8, the interference signal estimate means 7-1 to 7-N and the filters FFF1-FFFNB based on the estimate error and the estimate signal series.
Inventors:
Hitoshi Yoshino
Hiroshi Suzuki
Hiroshi Suzuki
Application Number:
JP13810295A
Publication Date:
February 12, 2002
Filing Date:
June 05, 1995
Export Citation:
Assignee:
NTT DoCoMo, Inc.
International Classes:
H03H21/00; H03M13/23; H04B3/14; H04B7/005; H04L1/00; H04L1/06; H04L27/22; (IPC1-7): H04B7/005; H04L1/00; H04L1/06
Domestic Patent References:
| JP786972A |
Other References:
吉野仁、他１名、“Ｂ−２５８ 周波数選択成フェージングにおける適応干渉キャンセル等化器の特性”、１９９３年電子情報通信学会秋季大会分冊２、ｐ．２−２５８
Attorney, Agent or Firm:
Kusano Taku (1 person outside)
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