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US 7,583,746 B2Granted
Wireless transmitting and receiving device and method
AssigneeKabushiki Kaisha Toshiba
InventorsTsuguhide Aoki, Daisuke Takeda, Takahiro Kobayashi, Yasuhiko Tanabe
Life of this patent
Estimating the term…
Abstract
A wireless device, method, and signal for use in communication of a wireless packet between transmitting device and a wireless receiving device via a plurality of antennas, wherein a signal generator generates wireless packet including a short-preamble sequence used for a first automatic gain control (AGC), a first long-preamble sequence, a signal field used for conveying a length of the wireless packet, an AGC preamble sequence used for a second AGC to be performed after the first AGC, a second long-preamble sequence, and a data field conveying data. The AGC preamble sequence is transmitted in parallel by the plurality of antennas.
Claims41
A wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the wireless transmitting device comprising:
- a signal generator configured to generate a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (1st AGC) at the wireless receiving device,
- a first long-preamble for estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (2nd AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- wherein the AGC preamble is transmitted in parallel via a plurality of antennas.
5 more elements
A wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the wireless transmitting device comprising:
- a signal generator configured to generate a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (1st AGC) at the wireless receiving device,
- a first long-preamble for estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (2nd AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- wherein the AGC preamble and the data field are transmitted in parallel via a plurality of antennas.
5 more elements
A wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the wireless transmitting device comprising:
- a signal generator configured to generate a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (1st AGC) at the wireless receiving device,
- a first long-preamble for estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (2nd AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- wherein the AGC preamble and the data field are transmitted in parallel via a plurality of antennas, and
- the short-preamble, the first long-preamble, and the signal field are transmitted via at least one of the plurality of antennas.
6 more elements
A wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the wireless transmitting device comprising:
- a signal generator configured to generate a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (1st AGC) at the wireless receiving device,
- a first long-preamble for estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (2nd AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- wherein the AGC preamble and the data field are transmitted in parallel via a plurality of antennas,
- the short-preamble, the first long-preamble, and the signal field are transmitted via at least one of the antennas,
- the short-preamble, the first long-preamble, and the signal field are recognizable by both a first communication system and a second communication system, and
- the AGC preamble and the data field are recognizable by the second communication system.
8 more elements
A wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the wireless transmitting device comprising:
- a signal generator configured to generate a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (1st AGC) at the wireless receiving device,
- a first long-preamble for estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (2nd AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- wherein the AGC preamble and the data field are transmitted in parallel via a plurality of antennas,
- the AGC preamble is formed by cyclic shifting of temporal positions,
- an amount of cyclic shift is different for different ones of the antennas,
- the short-preamble, the first long-preamble, and the signal field are transmitted via at least one of the antennas;
- the short-preamble, the first long-preamble, and the signal field are recognizable by both a first communication system and a second communication system;
- and
- the AGC preamble and the data field are recognizable by the second communication system.
11 more elements
A wireless transmitting method for using a wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the method comprising:
- generating a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (AGC) at the wireless receiving device,
- a first long-preamble for estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- and
- transmitting the AGC preamble in parallel via a plurality of antennas.
6 more elements
A wireless transmitting method for using a wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the method comprising:
- generating a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (AGC) at the wireless receiving device,
- a first long-preamble for estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- and
- transmitting the AGC preamble and the data field in parallel via a plurality of antennas.
6 more elements
A wireless transmitting method for using a wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the method comprising:
- generating a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (AGC) at the wireless receiving device,
- a first long-preamble for an estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- transmitting the AGC preamble and the data field in parallel via a plurality of antennas;
- and
- the short-preamble, the first long-preamble, and the signal field are transmitted via at least one of the antennas.
7 more elements
A wireless transmitting method for using a wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the method comprising:
- generating a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (AGC) at the wireless receiving device,
- a first long-preamble for estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- transmitting the AGC preamble and the data field in parallel via a plurality of antennas;
- and
- transmitting the short-preamble, the first long-preamble, and the signal field via at least one of the antennas,
- wherein the short-preamble, the first long-preamble, and the signal field are recognizable by both a first communication system and a second communication system, and
- the AGC preamble and the data field are recognizable by the second communication system.
9 more elements
A wireless transmitting method for using a wireless transmitting device for communicating with a wireless receiving device by using a wireless packet, the method comprising:
- generating a signal for transmitting the wireless packet, the wireless packet including:
- a short-preamble used for a first automatic gain control (AGC) at the wireless receiving device,
- a first long-preamble for estimating a channel impulse response between the wireless transmitting device and the wireless receiving device,
- a signal field following the short-preamble and the first long-preamble, and for conveying information regarding a length of the wireless packet,
- an AGC preamble following the signal field, and used for a second automatic gain control (AGC) performed after the first automatic gain control at the wireless receiving device,
- a second long-preamble for estimating the channel impulse response between the wireless transmitting device and the wireless receiving device, and
- a data field conveying data;
- transmitting the AGC preamble and the data field in parallel via a plurality of antennas;
- transmitting the short-preamble, the first long-preamble, and the signal field via at least one of the antennas,
- wherein the AGC preamble is formed by cyclic shifting of temporal positions,
- an amount of cyclic shift is different for different ones of the antennas,
- the short-preamble, the first long-preamble, and the signal field are recognizable by both a first communication system and a second communication system, and
- the AGC preamble and the data field are recognizable by the second communication system.
10 more elements
Dependencies are inferred from the claim text.