LDPC (low density parity check) coded modulation symbol...

Details LDPC (low density parity check) coded modulation symbol... LDPC (low density parity check) coded modulation symbol...

2006-10-05

2010-12-07

Chase, Shelly A (Department: 2112)

Error detection/correction and fault detection/recovery

Pulse or data error handling

Error/fault detection technique

Reexamination Certificate

active

07849389

ABSTRACT:
LDPC (Low Density Parity Check) coded modulation symbol decoding. Symbol decoding is supported by appropriately modifying an LDPC tripartite graph to eliminate the bit nodes thereby generating an LDPC bipartite graph (such that symbol nodes are appropriately mapped directly to check nodes thereby obviating the bit nodes). The edges that communicatively couple the symbol nodes to the check nodes are labeled appropriately to support symbol decoding of the LDPC coded modulation signal. The iterative decoding processing may involve updating the check nodes as well as estimating the symbol sequence and updating the symbol nodes. In some embodiments, an alternative hybrid decoding approach may be performed such that a combination of bit level and symbol level decoding is performed. This LDPC symbol decoding out-performs bit decoding only. In addition, it provides comparable or better performance of bit decoding involving iterative updating of the associated metrics.

REFERENCES:
Mansour te al., Memory efficient turbo decoder architectures for LDPC codes, 2002, IEEE, p. 159-164.

Affiliated with

Also associated with

Rating

LDPC (low density parity check) coded modulation symbol... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with LDPC (low density parity check) coded modulation symbol..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and LDPC (low density parity check) coded modulation symbol... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4165901