1. A network over coaxial cable, the network comprising a node that is configurable to request a message comprising a short burst preamble:
the networked node comprising a receiver which is configurable to request a message containing the short burst preamble; and
the preamble comprising a single channel estimation section.
2. The network of claim 1 wherein the message is a reservation request message.
3. The network of claim 1 wherein the message is an ACK message.
4. The network of claim 1 wherein the node is configured to request the utilization of a reduced constellation while transmitting the message.
5. A method for communicating over a network, the network comprising a plurality of network modules, the method comprising:
requesting reception of a short burst message comprising a short preamble;
transmitting the short burst message; and
receiving the short burst message.
6. The method of claim 5 wherein the preamble contains a single channel estimation section.
7. The method of claim 5 wherein the message is a reservation request message.
8. The method of claim 5 wherein the message is an ACK message.
9. The method of claim 5 wherein the node requests the transmitting of the short burst message wherein the transmission utilizes a reduced constellation.
10. A network over coaxial cable, the network comprising a node that is configurable to transmit a message comprising a short burst preamble; wherein:
the networked node comprises a transmitter which is configurable to transmit a message containing a short burst preamble; and
the preamble comprises a single channel estimation section.
11. The network of claim 10 wherein the message is a reservation request message.
12. The network of claim 10 wherein the message is an ACK message.
13. The network of claim 10 wherein the node utilizes a reduced constellation while transmitting the message.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
What is claimed is:
1. A data transmission system, comprising:
a transmitter which adds control data to transmission data, and modulates the resultant signal by a predetermined modulation method, and sends the result in a wireless manner;
a receiver which detects a reception power intensity by use of the control data contained in the transmitted signal;
wherein a random pattern is used for a reception-power detecting portion for detecting a reception power intensity, which is contained in the control data.
2. The data transmission system according claim 1, in which said reception-power detecting portion is located preceding to said transmission data, and in said receiver side, a reception power intensity of said reception-power detecting portion is detected, and the reception power intensity of the subsequent transmission data portion is adjusted.
3. The data transmission system according claim 1, in which said reception-power detecting portion is located preceding to said transmission data, and in said receiver side, an antenna selection diversity is realized which detects a reception power intensity of said reception-power detecting portion, and selects a receiving antenna for the subsequent transmission data portion.
4. The data transmission system according claim 1, in which said reception-power detecting portion is located preceding to said transmission data, and in said receiver side, a reception power intensity is detected during said reception-power detecting portion, and a hand-over function is realized which selects a transmitter station.
5. The data transmission system according claim 1, in which said reception-power detecting portion is located preceding to said transmission data, and in said receiver side, a reception power intensity is detected during said reception-power detecting portion, and a hand-over function is realized which selects a transmitter station of the subsequent transmission data portion.
6. The data transmission system according claim 1, in which said random pattern is an M-sequence data pattern.
7. The data transmission system according claim 1, in which said random pattern contains an M-sequence data pattern of 7 bits or longer.
8. The data transmission system according claim 1, in which said random pattern is a random pattern of which one period is longer than a distance corresponding to the number of bits representative of the maximum delay quantity of a delayed wave that is prescribed in the channel model for the wireless communication system.
9. The data transmission system according claim 1, in which when said transmission data is transmitted, said control data of one burst is added every one or a plural number of transmission data.
10. A data transmitter in use with a data transmission system in which a transmitter side adds control data to transmission data, and modulates the resultant signal by a predetermined modulation method, and sends the result in a wireless manner, and a receiver side detects a reception power intensity by use of the control data contained in the transmitted signal, said data transmitter comprising:
random pattern-adding means for adding a random pattern to a reception-power detecting portion for detecting a reception power intensity, which is contained in the control data.
11. The data transmission system according claim 8, in which said random pattern added by said random pattern adding means is an M-sequence data pattern.
12. The data transmission system according claim 8, in which said random pattern added by said random pattern adding means contains an M-sequence data pattern of 7 bits or longer.
13. The data transmission system according claim 8, in which said random pattern added by said random pattern adding means is a random pattern of which one period is longer than a distance corresponding to the number of bits representative of the maximum delay quantity of a delayed wave that is prescribed in the channel model for the wireless communication system.
14. The data transmission system according claim 8, in which said random pattern adding means operates such that when said transmission data is transmitted, said control data of one burst is added every one or a plural number of transmission data.
15. A data receiver in use with a data transmission system in which a transmitter side adds control data to transmission data, and modulates the resultant signal by a predetermined modulation method, and sends the result in a wireless manner, and a receiver side detects a reception power intensity by use of the control data contained in the transmitted signal, said data receiver comprising:
a reception-power intensity adjusting means for detecting a reception power intensity in said reception-power detecting portion and adjusting a reception power intensity of the subsequent transmission data portion when a random pattern is added to a reception-power detecting portion for detecting a reception power intensity, which is contained in the control data, and said reception-power detecting portion is located preceding to said transmission data.
16. A data receiver in use with a data transmission system in which a transmitter side adds control data to transmission data, and modulates the resultant signal by a predetermined modulation method, and sends the result in a wireless manner, and a receiver side detects a reception power intensity by use of the control data contained in the transmitted signal, said data receiver comprising:
antenna select diversity means for detecting a reception power intensity in said reception-power detecting portion and for selecting a receiving antenna, when a random pattern is added to a reception-power detecting portion for detecting a reception power intensity, which is contained in the control data, and said reception-power detecting portion is located preceding to said transmission data.
17. A data receiver in use with a data transmission system in which a transmitter side adds control data to transmission data, and modulates the resultant signal by a predetermined modulation method, and sends the result in a wireless manner, and a receiver side detects a reception power intensity by use of the control data contained in the transmitted signal, said data receiver comprising:
antenna select diversity means for detecting a reception power intensity in said reception-power detecting portion and for selecting a receiving antenna for the subsequent transmission data portion, when a random pattern is added to a reception-power detecting portion for detecting a reception power intensity, which is contained in the control data, and said reception-power detecting portion is located preceding to said transmission data.
18. A data receiver in use with a data transmission system in which a transmitter side adds control data to transmission data, and modulates the resultant signal by a predetermined modulation method, and sends the result in a wireless manner, and a receiver side detects a reception power intensity by use of the control data contained in the transmitted signal, said data receiver comprising:
hand-over control means for detecting a reception power intensity in said reception-power detecting portion and for selecting a transmitter station for the subsequent transmission data portion, when a random pattern is added to a reception-power detecting portion for detecting a reception power intensity, which is contained in the control data, and said reception-power detecting portion is located preceding to said transmission data.