Patent application number | Description | Published |
20090040081 | ENCODING AND DECODING METHODS USING GENERALIZED CONCATENATED CODES (GCC) - Systems, apparatuses, and methods for encoding and decoding using generalized concatenated codes (GCC) are described. The methods include receiving data; encoding the received data to obtain first encoded data; encoding the first encoded data until a GCC encoding reaches an intermediate level; and terminating the GCC encoding at the intermediate level. | 02-12-2009 |
20090150746 | ITERATIVE DECODER SYSTEMS AND METHODS - Systems and methods are provided for improved designs and performance for iterative decoder systems. In some embodiments, the iterative decoder may be decoupled from FIR samples through an FIR RAM, thus resulting in a less complex design and shorter processing times. In some embodiments, an intermediate memory may be used when passing information between the SOVA and LDPC of the iterative decoder. In some embodiments, the SOVA-required information may be continuously serialized from information received from the LDPC during each LDPC iteration. In some embodiments, the | 06-11-2009 |
20100231425 | SYSTEMS AND METHODS FOR CONSTRUCTING HIGH-RATE CONSTRAINED CODES - A high-rate constrained code is provided to encode/decode channel data. A transformer translates binary channel data into an arbitrary alphabet size. The transformer selects an indicator word and makes forbidden prefix substitutions in the data to be transformed. A finite-state encoder imposes some user-defined constraint on the transformed data before the data is transferred to the channel. The high-rate constrained coding technique may be used to produce high-rate DC-limited and run-length-limited codes. The high-rate code can be used in tandem with error-correcting codes. | 09-16-2010 |
20100322353 | NONLINEAR POST-PROCESSORS FOR CHANNELS WITH SIGNAL-DEPENDENT NOISE - A non-linear post-processor for estimating at least one source of signal-dependent noise is disclosed. The post processor may receive a set of preliminary decisions from a sub-optimal detector along with the sampled data signal. The post-processor may then compute the transition jitter and white noise associated with each preliminary decision in the set and assign a cost metric to each decision based on the total signal noise. The post-processor may output the decision with the lowest cost metric as the final decision of the detector. | 12-23-2010 |
20110043390 | ENCODING AND DECODING METHODS USING GENERALIZED CONCATENATED CODES (GCC) - Systems, apparatuses, and methods for encoding and decoding using generalized concatenated codes (GCC) are described. The methods include receiving data; encoding the received data to obtain first encoded data; encoding the first encoded data until a GCC encoding reaches an intermediate level; and terminating the GCC encoding at the intermediate level. | 02-24-2011 |
20120278686 | SYSTEMS AND METHODS FOR ACHIEVING HIGHER CODING RATE USING PARITY INTERLEAVING - The disclosed technology provides systems and methods for encoding data based on a run-length-limited code and an error correction code to provide codewords. The codewords include RLL-encoded data that are produced based on the RLL code, and parity information that are produced based on the error correction code. The parity information is interleaved among the RLL-encoded data. In one embodiment, the codeword is produced by separately producing the RLL-encoded data and the parity information, and interleaving the parity information among the RLL-encoded data. In one embodiment, the codeword is produced by producing the RLL-encoded data, and using erasure decoding to compute the parity information. | 11-01-2012 |
20130246879 | ITERATIVE DECODER SYSTEMS AND METHODS - Systems and methods are provided for improved designs and performance for iterative decoder systems. In some embodiments, the iterative decoder may be decoupled from FIR samples through an FIR RAM, thus resulting in a less complex design and shorter processing times. In some embodiments, an intermediate memory may be used when passing information between the SOVA and LDPC of the iterative decoder. In some embodiments, the SOVA-required information may be continuously serialized from information received from the LDPC during each LDPC iteration. In some embodiments, the 1/(1+D | 09-19-2013 |
20140143641 | ITERATIVE DECODER SYSTEMS AND METHODS - Systems and methods are provided for improved designs and performance for iterative decoder systems. In some embodiments, the iterative decoder may be decoupled from FIR samples through an FIR RAM, thus resulting in a less complex design and shorter processing times. In some embodiments, an intermediate memory may be used when passing information between the SOVA and LDPC of the iterative decoder. In some embodiments, the SOVA-required information may be continuously serialized from information received from the LDPC during each LDPC iteration. In some embodiments, the 1/(1+D | 05-22-2014 |