JP2006217328A5 - - Google Patents
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- JP2006217328A5 JP2006217328A5 JP2005028771A JP2005028771A JP2006217328A5 JP 2006217328 A5 JP2006217328 A5 JP 2006217328A5 JP 2005028771 A JP2005028771 A JP 2005028771A JP 2005028771 A JP2005028771 A JP 2005028771A JP 2006217328 A5 JP2006217328 A5 JP 2006217328A5
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前記単位送信データを送信する単位送信期間を少なくとも第1および第2の部分期間に分割し、第2の部分期間での単位時間当たりの伝送データ量を第1の部分期間での単位時間当たりの伝送データ量より大きくしたことを特徴とする無線通信システム。 In a wireless communication system that transmits data for each unit transmission data by wireless communication from a transmission device to a reception device,
The unit transmission period for transmitting the unit transmission data is divided into at least first and second partial periods, and the amount of transmission data per unit time in the second partial period is determined per unit time in the first partial period. A wireless communication system characterized by being larger than a transmission data amount.
送信データに対する誤り訂正符号化を行う符号化手段と、
この符号化手段の出力を変調する変調手段と、
この変調手段の出力を無線により送信する送信手段と、
前記単位送信データを送信する単位送信期間を少なくとも第1および第2の部分期間に分割し、第2の部分期間での単位時間当たりの伝送データ量を第1の部分期間での単位時間当たりの伝送データ量より大きくする制御手段と
を備えたことを特徴とする送信装置。 In a transmission device that divides transmission data into unit transmission data and transmits each unit transmission data by wireless communication,
Encoding means for performing error correction encoding on transmission data;
Modulation means for modulating the output of the encoding means;
Transmitting means for wirelessly transmitting the output of the modulating means;
The unit transmission period for transmitting the unit transmission data is divided into at least first and second partial periods, and the amount of transmission data per unit time in the second partial period is determined per unit time in the first partial period. And a control unit configured to make the transmission data amount larger than the transmission data amount.
前記制御手段は、単位送信データの中に、当該単位送信データ内または次の単位送信データ内の前記部分期間の長さ情報を受信側へ通知する通知データを含めることを特徴とする請求項2記載の送信装置。 The first and second partial periods are variable;
The control means includes, in the unit transmission data, notification data for notifying the receiving side of length information of the partial period in the unit transmission data or the next unit transmission data. The transmitting device described.
送信データを受信してベースバンド受信信号に変換する受信手段と、
前記ベースバンド受信信号のデータ部分に基づいてチャネル推定を行うチャネル推定手段と、
このチャネル推定手段により得られたチャネル推定値により前記ベースバンド受信信号に対してチャネル等化を行うチャネル等化手段と、
このチャネル等化手段の出力を所定の復調方式で復調する復調手段と、
この復調手段の出力を復号する復号手段と、
前記単位送信データを送信する単位送信期間内の第1の部分期間から第2の部分期間に移行するとき、第1の符号化率に対応する第1の復号方式から、より符号化率の高い第2の符号化率に対応する第2の復号方式に切り替えるよう前記符号化手段を制御する制御手段と
を備えたことを特徴とする受信装置。 In a receiving apparatus that receives data transmitted by wireless communication for each unit transmission data,
Receiving means for receiving transmission data and converting it into a baseband received signal;
Channel estimation means for performing channel estimation based on a data portion of the baseband received signal;
Channel equalization means for performing channel equalization on the baseband received signal based on the channel estimation value obtained by the channel estimation means;
Demodulation means for demodulating the output of the channel equalization means by a predetermined demodulation method;
Decoding means for decoding the output of the demodulation means;
When shifting from the first partial period within the unit transmission period for transmitting the unit transmission data to the second partial period, the first decoding scheme corresponding to the first coding rate has a higher coding rate. And a control unit that controls the encoding unit to switch to the second decoding method corresponding to the second encoding rate.
送信データを受信してベースバンド受信信号に変換する受信手段と、
前記ベースバンド受信信号のデータ部分に基づいてチャネル推定を行うチャネル推定手段と、
このチャネル推定手段により得られたチャネル推定値により前記ベースバンド受信信号に対してチャネル等化を行うチャネル等化手段と、
このチャネル等化手段の出力を所定の復調方式で復調する復調手段と、
この復調手段の出力を復号する復号手段と、
前記単位送信データを送信する単位送信期間内の第1の部分期間から第2の部分期間に移行するとき、第1の変調方式に対応する第1の復調方式から、より多値化した第2の変調方式に対応する第2の復調方式に切り替えるよう前記復調手段を制御する制御手段と
を備えたことを特徴とする受信装置。 In a receiving apparatus that receives data transmitted by wireless communication for each unit transmission data,
Receiving means for receiving transmission data and converting it into a baseband received signal;
Channel estimation means for performing channel estimation based on a data portion of the baseband received signal;
Channel equalization means for performing channel equalization on the baseband received signal based on the channel estimation value obtained by the channel estimation means;
Demodulation means for demodulating the output of the channel equalization means by a predetermined demodulation method;
Decoding means for decoding the output of the demodulation means;
When shifting from the first partial period in the unit transmission period in which the unit transmission data is transmitted to the second partial period, the second demodulated second multi-level is obtained from the first demodulation system corresponding to the first modulation system. And a control means for controlling the demodulation means so as to switch to a second demodulation method corresponding to the modulation method.
前記制御手段は、受信した単位送信データの中に含まれた通知データに基づいて、当該単位送信データ内または次の単位送信データ内の前記部分期間の長さを決定することを特徴とする請求項11または12記載の受信装置。 The first and second partial periods are variable;
The control means determines the length of the partial period in the unit transmission data or in the next unit transmission data based on notification data included in the received unit transmission data. Item 13. The receiving device according to Item 11 or 12.
送信データに対して誤り訂正符号化を行う符号化ステップと、
この誤り訂正符号化されたデータを変調する変調ステップと、
この変調出力を無線により送信する送信ステップと、
前記単位送信データを送信する単位送信期間を少なくとも第1および第2の部分期間に分割し、第2の部分期間での単位時間当たりの伝送データ量を第1の部分期間での単位時間当たりの伝送データ量より大きくする制御ステップと
を備えたことを特徴とする送信方法。 In a transmission method of dividing transmission data into unit transmission data and transmitting each unit transmission data by wireless communication,
An encoding step for performing error correction encoding on transmission data;
A modulation step for modulating the error correction encoded data;
A transmission step of transmitting the modulated output by radio;
The unit transmission period for transmitting the unit transmission data is divided into at least first and second partial periods, and the amount of transmission data per unit time in the second partial period is determined per unit time in the first partial period. And a control step of making the transmission data amount larger than the transmission data amount.
送信データを受信してベースバンド受信信号に変換する受信ステップと、
前記ベースバンド受信信号のデータ部分に基づいてチャネル推定を行うチャネル推定ステップと、
このチャネル推定ステップにより得られたチャネル推定値により前記ベースバンド受信信号に対してチャネル等化を行うチャネル等化ステップと、
このチャネル等化出力を所定の復調方式で復調する復調ステップと、
この復調出力を復号する復号ステップと、
前記単位送信データを送信する単位送信期間内の第1の部分期間から第2の部分期間に移行するとき、第1の符号化率に対応する第1の復号方式から、より符号化率の高い第2の符号化率に対応する第2の復号方式に切り替える制御ステップと
を備えたことを特徴とする受信方法。 In a receiving method for receiving data transmitted by wireless communication for each unit transmission data,
A reception step of receiving transmission data and converting it into a baseband reception signal;
A channel estimation step for performing channel estimation based on a data portion of the baseband received signal;
A channel equalization step for performing channel equalization on the baseband received signal by the channel estimation value obtained by the channel estimation step;
A demodulation step for demodulating the channel equalized output by a predetermined demodulation method;
A decoding step for decoding the demodulated output;
When shifting from the first partial period within the unit transmission period for transmitting the unit transmission data to the second partial period, the coding rate is higher than the first decoding method corresponding to the first coding rate. And a control step of switching to the second decoding method corresponding to the second coding rate.
送信データを受信してベースバンド受信信号に変換する受信ステップと、
前記ベースバンド受信信号のデータ部分に基づいてチャネル推定を行うチャネル推定ステップと、
このチャネル推定ステップにより得られたチャネル推定値により前記ベースバンド受信信号に対してチャネル等化を行うチャネル等化ステップと、
このチャネル等化出力を所定の復調方式で復調する復調ステップと、
この復調出力を復号する復号ステップと、
前記単位送信データを送信する単位送信期間内の第1の部分期間から第2の部分期間に移行するとき、第1の変調方式に対応する第1の復調方式から、より多値化した第2の変調方式に対応する第2の復調方式に切り替えるよう復調を制御する制御ステップと
を備えたことを特徴とする受信方法。 In a receiving method for receiving data transmitted by wireless communication for each unit transmission data,
A reception step of receiving transmission data and converting it into a baseband reception signal;
A channel estimation step for performing channel estimation based on a data portion of the baseband received signal;
A channel equalization step for performing channel equalization on the baseband received signal based on the channel estimation value obtained by the channel estimation step;
A demodulation step for demodulating the channel equalized output by a predetermined demodulation method;
A decoding step for decoding the demodulated output;
When shifting from the first partial period within the unit transmission period in which the unit transmission data is transmitted to the second partial period, the second demodulated second multi-level is obtained from the first demodulation system corresponding to the first modulation system. And a control step for controlling demodulation so as to switch to the second demodulation method corresponding to the modulation method.
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JP2005028771A JP4605643B2 (en) | 2005-02-04 | 2005-02-04 | Wireless communication system, transmission apparatus, reception apparatus, transmission method, and reception method |
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JP2005028771A JP4605643B2 (en) | 2005-02-04 | 2005-02-04 | Wireless communication system, transmission apparatus, reception apparatus, transmission method, and reception method |
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JP2006217328A JP2006217328A (en) | 2006-08-17 |
JP2006217328A5 true JP2006217328A5 (en) | 2008-02-28 |
JP4605643B2 JP4605643B2 (en) | 2011-01-05 |
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JP4841330B2 (en) * | 2005-09-14 | 2011-12-21 | 三洋電機株式会社 | Radio apparatus and communication system |
JP6350921B2 (en) * | 2013-04-12 | 2018-07-04 | サン パテント トラスト | Sending method |
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JP3843581B2 (en) * | 1998-03-05 | 2006-11-08 | 富士ゼロックス株式会社 | Image encoding device, image decoding device, image processing device, image encoding method, image decoding method, and image processing method |
JP3979789B2 (en) * | 2001-01-15 | 2007-09-19 | 三洋電機株式会社 | Digital signal receiver |
JP3886748B2 (en) * | 2001-07-27 | 2007-02-28 | 株式会社エヌ・ティ・ティ・ドコモ | Demodulator, demodulation method, and communication apparatus |
EP1511340A1 (en) * | 2002-05-31 | 2005-03-02 | Mitsubishi Denki Kabushiki Kaisha | Communication system |
JP4044797B2 (en) * | 2002-07-01 | 2008-02-06 | 松下電器産業株式会社 | Wireless communication apparatus and transmission allocation control method |
JP3931125B2 (en) * | 2002-08-07 | 2007-06-13 | 松下電器産業株式会社 | Radio apparatus and base station apparatus |
JP4353774B2 (en) * | 2002-12-04 | 2009-10-28 | パナソニック株式会社 | Data transmission method and data reception method, and transmission apparatus and reception apparatus using them |
JP4018989B2 (en) * | 2003-01-20 | 2007-12-05 | 松下電器産業株式会社 | Transmitting apparatus and transmitting method |
EP2333988B1 (en) * | 2003-02-20 | 2013-11-20 | Fujitsu Limited | Radio channel control method and receiving apparatus |
JP4028504B2 (en) * | 2004-03-22 | 2007-12-26 | 株式会社東芝 | Wireless transmission device, wireless reception device, and wireless communication system |
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