FAISCEAUX HERTZIENS PDF

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Method of automatically requesting retransmission in a duplex digital transmission system having at least one noisy return channel, and an installation for implementing the method. Patent number: Abstract: A go-back-N automatic repeat request method for use on a duplex installation having noisy return channels.

When an acknowledge signal ACK is not correctly received, it is assumed to be positive until the Nth successive incorrectly received acknowledgement, which is treated as a negative acknowledgement, thereby ensuring that blocks are repeated even if acknowledgements are degraded by jamming.

Type: Grant. Filed: September 18, Date of Patent: January 9, Method and apparatus for sequentially decoding a digital stream encoded by a convolution type error-correcting code. Abstract: A method and apparatus for sequential decoding using the stack algorithm.

A stack is used which is small in size and which has a leaky bottom. A counter stores the total count of nodes observed so as to abandon decoding if this count exceeds a fixed value. A comparator continuously compares the metric at the top of the stack with the largest metric lost from the bottom of the stack as stored in a memory.

A small memory stores the path scanned through the logic tree, thereby directly providing the decoded block. Filed: March 28, Date of Patent: July 12, Method and apparatus for digital data transmission with automatic repeat request.

Abstract: Enough room is provided in a transmitted frame to receive a plurality n of useful information blocks, thereby making it possible to catch up any excessive lateness r which may arise due to successive repeats.

The decoder 2 provides a confidence flag 3 to the controlling microprocessor 5. The command block COM from the decoder includes an indication of the number of useful blocks that are transmitted in the frame. This block is advantageously applied to an HDLC component 8.

Filed: September 8, Date of Patent: May 17, Justia Legal Resources. Find a Lawyer. Law Students. US Federal Law. US State Law. Other Databases. Legal Marketing.

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Signatures et modèles de propagation pour faisceaux hertziens numériques.

Method of automatically requesting retransmission in a duplex digital transmission system having at least one noisy return channel, and an installation for implementing the method. Patent number: Abstract: A go-back-N automatic repeat request method for use on a duplex installation having noisy return channels. When an acknowledge signal ACK is not correctly received, it is assumed to be positive until the Nth successive incorrectly received acknowledgement, which is treated as a negative acknowledgement, thereby ensuring that blocks are repeated even if acknowledgements are degraded by jamming. Type: Grant. Filed: September 18, Date of Patent: January 9,

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Faisceaux Hertziens

Method of automatically requesting retransmission in a duplex digital transmission system having at least one noisy return channel, and an installation for implementing the method. Patent number: Abstract: A go-back-N automatic repeat request method for use on a duplex installation having noisy return channels. When an acknowledge signal ACK is not correctly received, it is assumed to be positive until the Nth successive incorrectly received acknowledgement, which is treated as a negative acknowledgement, thereby ensuring that blocks are repeated even if acknowledgements are degraded by jamming. Type: Grant. Filed: September 18, Date of Patent: January 9,

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When allowing use within the sub MHz frequency band for downlink-only terrestrial wireless broadband electronic communications services, Member States should ensure that such use does not affect the use of sub MHz band for digital terrestrial broadcasting in neighbouring Member States, as provided for in the agreement at the Regional Radiocommunication Conference of Common technical conditions and principles are necessary to ensure coexistence, as appropriate protection, between wireless broadband electronic communications services and T-DAB within the 1 MHz band, and between such services in the band and other uses in adjacent bands, including tactical radio relays, coordinated fixed links and aeronautical telemetry. We assume no liability for the accuracy, completeness or timeliness of this information. For any matter concerning the site or its use, including any dispute, only Belgian law will apply, and only the courts of Brussels will have jurisdiction. By using the site, you thereby accept all the conditions of use. Looking for the accurate translation of a word in context? Looking for legal information?

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