Title:
METHOD AND DEVICE RELATED TO HYBRID DECISION FEEDBACK EQUALIZATION
Document Type and Number:
Japanese Patent JP2015008491
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for reducing error propagation in decision feedback equalizer.SOLUTION: In a method and a device related to hybrid decision feedback equalization, a correction term is used for compensating slicer error, thus avoiding error propagation. Filter coefficients related to an equalizer include a correction term as a function of energy of filter coefficients, and are selected for minimizing the cost function related to the equalizer. The equalizer includes a coefficient generator responding to the correction term. A transmitted symbol is estimated from a sample that is received as a function of the signal interface and noise ratio (SINR) of a received sample. The received samples are quantized, and mapped to a region of a grid overlayed on a transmitted symbol constellation. The region corresponds to the symbol estimate, or is processed furthermore for obtaining the symbol estimate.
Inventors:
JAYARAMAN SRIKANT
IVAN JESUS FERNANDEZ-CORBATON
ZHENG YI SUMI
IVAN JESUS FERNANDEZ-CORBATON
ZHENG YI SUMI
Application Number:
JP2014161197A
Publication Date:
January 15, 2015
Filing Date:
August 07, 2014
Export Citation:
Assignee:
QUALCOMM INC
International Classes:
H03H21/00; H04L27/01; H04B3/06; H04L27/22; H04B7/005; H04L25/00; H04L25/03
Domestic Patent References:
| JPH08265143A | 1996-10-11 | |||
| JPH1093651A | 1998-04-10 | |||
| JP2000315957A | 2000-11-14 |
Other References:
JPN6011009091; Ｓ．Ｌ．ＡＲＩＹＡＶＩＳＩＴＡＫＵＬ， Ｙｅ ＬＩ: 'Ｊｏｉｎｔ ｃｏｄｉｎｇ ａｎｄ ｄｅｃｉｓｉｏｎ ｆｅｅｄｂａｃｋ ｅｑｕａｌｉｚａｔｉｏｎ ｆｏｒ ｂｒｏａｄｂａｎｄ ｗｉｒｅｌｅｓｓ ｃｈａｎｎｅｌｓ' ＩＥＥＥ Ｊｏｕｒｎａｌ ｏｎ Ｓｅｌｅｃｔｅｄ Ａｒｅａｓ ｉｎ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ ｖｏｌ．１６， ｎｏ．９, 199812, ｐｐ．１６７０-１６７８, ＩＥＥＥ
JPN6011009087; Ｍ．ＣＨＩＡＮＩ: 'Ｉｎｔｒｏｄｕｃｉｎｇ ｅｒａｓｕｒｅｓ ｉｎ ｄｅｃｉｓｉｏｎ-ｆｅｅｄｂａｃｋ ｅｑｕａｌｉｚａｔｉｏｎ ｔｏ ｒｅｄｕｃｅ ｅｒｒｏｒ ｐｒｏｐａｇａｔｉｏｎ' ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ ｖｏｌ．４５， ｎｏ．７, 199707, ｐｐ．７５７-７６０, ＩＥＥＥ
JPN6011009091; Ｓ．Ｌ．ＡＲＩＹＡＶＩＳＩＴＡＫＵＬ， Ｙｅ ＬＩ: 'Ｊｏｉｎｔ ｃｏｄｉｎｇ ａｎｄ ｄｅｃｉｓｉｏｎ ｆｅｅｄｂａｃｋ ｅｑｕａｌｉｚａｔｉｏｎ ｆｏｒ ｂｒｏａｄｂａｎｄ ｗｉｒｅｌｅｓｓ ｃｈａｎｎｅｌｓ' ＩＥＥＥ Ｊｏｕｒｎａｌ ｏｎ Ｓｅｌｅｃｔｅｄ Ａｒｅａｓ ｉｎ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ ｖｏｌ．１６， ｎｏ．９, 199812, ｐｐ．１６７０-１６７８, ＩＥＥＥ
JPN6011009087; Ｍ．ＣＨＩＡＮＩ: 'Ｉｎｔｒｏｄｕｃｉｎｇ ｅｒａｓｕｒｅｓ ｉｎ ｄｅｃｉｓｉｏｎ-ｆｅｅｄｂａｃｋ ｅｑｕａｌｉｚａｔｉｏｎ ｔｏ ｒｅｄｕｃｅ ｅｒｒｏｒ ｐｒｏｐａｇａｔｉｏｎ' ＩＥＥＥ Ｔｒａｎｓａｃｔｉｏｎｓ ｏｎ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ ｖｏｌ．４５， ｎｏ．７, 199707, ｐｐ．７５７-７６０, ＩＥＥＥ
JPN6011009091; Ｓ．Ｌ．ＡＲＩＹＡＶＩＳＩＴＡＫＵＬ， Ｙｅ ＬＩ: 'Ｊｏｉｎｔ ｃｏｄｉｎｇ ａｎｄ ｄｅｃｉｓｉｏｎ ｆｅｅｄｂａｃｋ ｅｑｕａｌｉｚａｔｉｏｎ ｆｏｒ ｂｒｏａｄｂａｎｄ ｗｉｒｅｌｅｓｓ ｃｈａｎｎｅｌｓ' ＩＥＥＥ Ｊｏｕｒｎａｌ ｏｎ Ｓｅｌｅｃｔｅｄ Ａｒｅａｓ ｉｎ Ｃｏｍｍｕｎｉｃａｔｉｏｎｓ ｖｏｌ．１６， ｎｏ．９, 199812, ｐｐ．１６７０-１６７８, ＩＥＥＥ
Attorney, Agent or Firm:
Masatoshi Kurata
Toshihiro Fukuhara
Nobuhisa Nogawa
Peak Takashi
Naoki Kono
Sunagawa 克
Iseki Mamoru 3
Tadashi Inoue
Tatsushi Sato
Okada Kishi
Mihoko Horiuchi
Toshihiro Fukuhara
Nobuhisa Nogawa
Peak Takashi
Naoki Kono
Sunagawa 克
Iseki Mamoru 3
Tadashi Inoue
Tatsushi Sato
Okada Kishi
Mihoko Horiuchi