System and method for variably inserting training symbols into transmissions by estimating the channel coherence time in a wireless communication network
First Claim
1. A method for controlling the quantity of training symbols in a transmission sequence sent by a terminal in a wireless network, wherein the transmission sequence comprises training symbols and data symbols, the method comprising:
- determining the number of data symbol errors which are at a first distance from training symbols in the transmission sequence;
determining the number of data symbol errors which are at a second distance from training symbols in the transmission sequence, the second distance being greater than the first distance; and
adjusting the quantity of training symbols in the transmission sequence based on a result of a comparison of the ratio of the number of data symbol errors which are at the first distance from the training symbols to the number of data symbol errors which are at the second distance from the training symbols.
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Abstract
A system and method for controlling the quantity of training symbols in a transmission sequence sent by a terminal (102, 106, 107) in a wireless network (100). The transmission sequence include training symbols and data symbols. The system and method determine the number of data symbol errors which are close to training symbols in the transmission sequence, determine the number of symbol data errors which are far from training symbols in the transmission sequence, and adjust the quantity of training symbols in the transmission sequence based on a result of a comparison of the ratio of the number of data symbol errors which are close to training symbols to the number of data symbol errors which are far from training symbols.
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Citations
20 Claims
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1. A method for controlling the quantity of training symbols in a transmission sequence sent by a terminal in a wireless network, wherein the transmission sequence comprises training symbols and data symbols, the method comprising:
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determining the number of data symbol errors which are at a first distance from training symbols in the transmission sequence; determining the number of data symbol errors which are at a second distance from training symbols in the transmission sequence, the second distance being greater than the first distance; and adjusting the quantity of training symbols in the transmission sequence based on a result of a comparison of the ratio of the number of data symbol errors which are at the first distance from the training symbols to the number of data symbol errors which are at the second distance from the training symbols. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling the quantity of training symbols in a transmission sequence sent by a terminal in a wireless network, wherein the transmission sequence comprises training symbols and data symbols, the system comprising:
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a controller disposed at the terminal, and operating to determine the number of data symbol errors which are at a first distance from training symbols in the transmission sequence, and to determine the number of data symbol errors which are at a second distance, greater than the first distance, from training symbols in the transmission sequence; and the controller further operating to adjust the quantity of training symbols in the transmission sequence based on a result of a comparison of the ratio of the number of data symbol errors which are at the first distance from the training symbols to the number of data symbol errors which are at the second distance from the training symbols. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification