Patent
Reduced table size forward error correcting encoder
Gary Garrabrant,Katherine Elliott +1 more
- 03 Mar 2000
16
TL;DR: In this paper, a method and system for encoding and decoding a sequence of K binary digits using reduced-size lookup tables is presented, where the sequence of binary digits is separated into multiple segments (e.g., a first segment and a second segment).
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Abstract: A method and system for encoding and decoding a sequence of K binary digits using reduced-size lookup tables The sequence of K binary digits is separated into multiple segments (eg, a first segment and a second segment) The first segment is used as an index into a first lookup table that contains an encoded version of all combinations of binary digits possible in the first segment In a similar manner, the second segment is used as an index into a second lookup table that contains an encoded version of all combinations of binary digits possible in the second segment Using the first lookup table, an encoded sequence is obtained for the first segment, and an encoded sequence is obtained for the second segment using the second lookup table An encoded sequence for the entire sequence of K binary digits is obtained by combining the encoded sequences for the first and second segments Two lookup tables are thus used to encode the sequence of K binary digits instead of a single lookup table having 2K entries The sizes of the two lookup tables are such that, if combined, they would contain fewer than 2K entries, thereby saving memory space in devices with limited memory capacity
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Citations
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Richard J. Helferich
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Vicent V. Cavanna,Patricia A Thaler +1 more
- 06 Jun 2003
TL;DR: In this paper, a system for computing a CRC value includes at least one memory for storing a data message, a current CRC value, and a plurality of lookup tables, each of the lookup tables stores a multiplicative of multi-byte CRC values.
9
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8
Patent
Method for integrating audio and visual messaging
Richard J. Helferich
- 06 Oct 2004
TL;DR: A communication system that integrates audio and visual messaging, including a mobile communication device for receiving visual messages and for transmitting voice messages to a recipient, a base station system in communication with the mobile communication devices, an electronic mail gateway for delivering visual messages to the base station for transmission to the mobile device, and an integrated mail gateway was proposed in this paper.
8
An Efficient Encoding Algorithm for (n, k) Binary Cyclic Codes
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7
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Patent
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