Title:
ハイブリッド判定フィードバック等化に関する方法及び装置
Document Type and Number:
Japanese Patent JP5405541
Kind Code:
B2
Abstract:
A method and apparatus for a decision feedback equalizer wherein a correction term is used to compensate for slicer errors, thus avoiding error propagation. Filter coefficients for the equalizer are selected so as to minimize a cost function for the equalizer, including a correction term as a function of the energy of the filter coefficients. The equalizer includes a coefficient generator responsive to the correction term. One embodiment estimates a transmitted symbol from a received sample as a function of Signal-to-Interference and Noise Ratio (SINR) of the received sample. The received sample is quantized and mapped to a region of a grid overlaid on the transmitted symbol constellation. The region may correspond to a symbol estimate value or may be processed further to obtain a symbol estimate value.
Inventors:
Sricant Jayarman
Ivan Jesus Fernandez Covaton
John E. Smy
Ivan Jesus Fernandez Covaton
John E. Smy
Application Number:
JP2011180517A
Publication Date:
February 05, 2014
Filing Date:
August 22, 2011
Export Citation:
Assignee:
QUALCOMM INCORPORATED
International Classes:
H04B7/005; H04L27/01; H03H21/00; H04B3/06; H04L25/00; H04L25/03
Domestic Patent References:
| JP4373330B2 | ||||
| JP200059273A |
Other References:
M.CHIANI,Introducing erasures in decision-feedback equalization to reduce error propagation,IEEE Transactions on Communications,IEEE,1997年 7月,vol.45, no.7,pp.757-760
S.L.ARIYAVISITAKUL, Ye LI,Joint coding and decision feedback equalization for broadband wireless channels,IEEE Journal on Selected Areas in Communications,IEEE,1998年12月,vol.16, no.9,pp.1670-1678
S.L.ARIYAVISITAKUL, Ye LI,Joint coding and decision feedback equalization for broadband wireless channels,IEEE Journal on Selected Areas in Communications,IEEE,1998年12月,vol.16, no.9,pp.1670-1678
Attorney, Agent or Firm:
Kurata Masatoshi
Takakura Shigeo
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori
Takakura Shigeo
Satoshi Kono
Makoto Nakamura
Yoshihiro Fukuhara
Takashi Mine
Toshio Shirane
Sadao Muramatsu
Nobuhisa Nogawa
Kocho Chojiro
Naoki Kono
Katsu Sunagawa
Morisezo Iseki
Tatsushi Sato
Takashi Okada
Mihoko Horiuchi
Takenori Masanori