Adaptive power control and coding scheme for mobile radio systems
First Claim
1. A method of transmitting a signal to a receiver across a wireless communications channel, the method comprising the steps of:
- encoding a first portion of the signal with a first code to generate a first encoded signal portion;
transmitting the first encoded signal portion with a first power level;
receiving parameter data representative of one or more characteristics of a received signal portion having been received by the receiver, the received signal portion having been based on the transmitted first encoded signal portion;
determining a second code and a second power level based on the received parameter data;
encoding a second portion of the signal with the second code to generate a second encoded signal portion; and
transmitting the second encoded signal portion with the second power level.
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Accused Products
Abstract
A dynamic combined power control and forward error correction control (FEC) technique for mobile radio systems which illustratively decreases the power consumed by wireless transmitters and increases the number of simultaneous connections which may be supported thereby. Individual transmitter-receiver pairs may adaptively determine the minimal power and FEC required to satisfy specified quality-of-service (QOS) constraints. Specifically, in accordance with an illustrative embodiment of the present invention, a first portion of a signal is encoded with a first code to generate a first encoded signal portion. Then, the first encoded signal portion is transmitted with a first power level. Next, parameter data is received, wherein the parameter data is representative of one or more characteristics of a received signal portion having been received by the receiver, the received signal portion having been based on the transmitted first encoded signal portion. A second code and a second power level is then determined based on the received parameter data, and a second portion of the signal is encoded with the second code to generate a second encoded signal portion. Finally, the second encoded signal portion is transmitted with the second power level.
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Citations
22 Claims
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1. A method of transmitting a signal to a receiver across a wireless communications channel, the method comprising the steps of:
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encoding a first portion of the signal with a first code to generate a first encoded signal portion; transmitting the first encoded signal portion with a first power level; receiving parameter data representative of one or more characteristics of a received signal portion having been received by the receiver, the received signal portion having been based on the transmitted first encoded signal portion; determining a second code and a second power level based on the received parameter data; encoding a second portion of the signal with the second code to generate a second encoded signal portion; and transmitting the second encoded signal portion with the second power level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A mobile radio transmitter apparatus for transmitting a signal to a receiver across a wireless communications channel, the mobile radio transmitter comprising:
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means for encoding a first portion of the signal with a first code to generate a first encoded signal portion; means for transmitting the first encoded signal portion with a first power level; means for receiving parameter data representative of one or more characteristics of a received signal portion having been received by the receiver, the received signal portion having been based on the transmitted first encoded signal portion; means for determining a second code and a second power level based on the received parameter data; means for encoding a second portion of the signal with the second code to generate a second encoded signal portion; and means for transmitting the second encoded signal portion with the second power level. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification