Radio communication system
First Claim
1. A TDMA radio communication system using a multiple sub-carrier modulation method, said TDMA radio communication system, comprising:
- at least a first and a second radio station, whereinsaid second radio station selects only those sub-carriers capable of providing a transmission rate not less than a predetermined value in said first radio station, on the basis of the reception conditions of each sub-carrier of said first radio station, and modulates the selected sub-carriers using a modulation level or a coding rate in accordance with the reception conditions of said sub-carriers and also in accordance with the position of said first radio station with respect to said second radio station so as to perform communication.
4 Assignments
0 Petitions
Accused Products
Abstract
A TDMA radio communication system uses a multiple sub-carrier modulation method. The TDMA radio communication system comprises at least a first and a second radio station. The second radio station selects only those sub-carriers capable of providing a transmission rate not less than a predetermined value in the first radio station, on the basis of the reception conditions of each sub-carrier of said first radio station. The second radio station then modulates the selected sub-carriers using a modulation level or a coding rate in accordance with the reception conditions of the sub-carriers so as to perform communication, thereby obtaining a desired transmission rate while controlling interface to other stations.
18 Citations
16 Claims
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1. A TDMA radio communication system using a multiple sub-carrier modulation method, said TDMA radio communication system, comprising:
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at least a first and a second radio station, wherein said second radio station selects only those sub-carriers capable of providing a transmission rate not less than a predetermined value in said first radio station, on the basis of the reception conditions of each sub-carrier of said first radio station, and modulates the selected sub-carriers using a modulation level or a coding rate in accordance with the reception conditions of said sub-carriers and also in accordance with the position of said first radio station with respect to said second radio station so as to perform communication. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A TDMA radio communication system using a multiple sub-carrier modulation method, said TDMA radio communication system, comprising:
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at least one base station and a terminal station, wherein said base station selects only those sub-carriers capable of providing such a transmission rate not less than a predetermined value in said terminal station, on the basis of the reception conditions of each sub-carrier of said terminal station, and modulates the selected sub-carriers using a modulation level or a coding rate allotted in accordance with the reception conditions of the selected sub-carriers and the position of said terminal station with respect to said base station so as to perform communication. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A TDMA radio communication system using a multiple sub-carrier modulation method, said TDMA radio communication system, comprising:
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at least one base station and a terminal station that perform communication, wherein said base station selects only those sub-carriers capable of providing a transmission rate not less than a predetermined value in said terminal station, on the basis of the reception conditions of each sub-carrier of said terminal station, and modulates the selected sub-carriers using a modulation level or a coding rate allotted in accordance with the reception conditions of the selected sub-carriers and the position of said terminal station with respect to said base station so as to perform communication.
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15. A second radio station suitable for a TDMA radio communication system using a multiple sub-carrier modulation method and comprising:
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at least a first radio station and said second radio station, wherein said second radio station selects only those sub-carriers capable of providing a transmission rate not less than a predetermined value in said first radio station, on the basis of the reception conditions of each sub-carrier of said first radio station, and modulates the selected sub-carriers using a modulation level or a coding rate in accordance with the reception conditions of the selected sub-carriers and also in accordance with the position of said first radio station with respect to said second radio station so as to perform communication.
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16. A base station suitable for a TDMA radio communication system using a multiple sub-carrier modulation method and comprising:
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at least one base station and a terminal station, wherein said base station selects only those sub-carriers capable of providing a transmission rate not less than a predetermined value in said terminal station, on the basis of the reception conditions of each sub-carrier of said terminal station, and modulates the selected sub-carriers using a modulation level or a coding rate allotted in accordance with the reception conditions of the selected sub-carriers and the position of said terminal station with respect to said base station so as to perform communication.
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Specification