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US 2003/0126545 A1Published application
Non-linear code-division multiple access technology with improved detection algorithms and error correction coding
OwnerAlfred Keng Tiong Taninventor
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Abstract
A method of channel spread signal coding is provided that enhances error correction coding schemes by further coding error correction coded signals based on a non-linear block error correction coding scheme that introduces a detectable pattern into the signal output prior to transmission. At the receiver end, the detectable pattern may be decorrelated enabling the use of RAKE receivers and enhanced decoding schemes.
Claims38
A method of coding data signals for transmission, comprising:
- in a first coding stage, generating coded bits based on a data signal using an error correction coding scheme;
- in a second stage, further coding the coded bits based on a non-linear block error correction coding scheme to achieve an output having a detectable pattern;
- and
- transmitting a channel spread signal based on the output.
1 more element
A method of decoding a channel spread encoded signal, comprising:
- receiving a channel spread signal;
- in a first decoding stage, decorrelating the received signal based on a non-linear error correction coding scheme to recover estimates of the coded bits, in blocks of n bits and estimating an additional parity bit or bits, from the received signal;
- and
- in a second decoding stage, decoding the coded n bits and the additional parity bit or bits, based on an error correction decoding scheme to recover a data signal.
1 more element
Dependencies are inferred from the claim text.