Error-corrected codeword configuration and method

• US 6,598,188 B1
• Filed: 05/10/2000
• Issued: 07/22/2003
• Est. Priority Date: 05/10/1999
• Status: Active Grant

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Locke, Michael, Gulati, Kapil
• Primary Examiner(s): TU, CHRISTINE TRINH LE
• Application Number:
  US09/569,104
• Time in Patent Office: 1,168 Days
• Field of Search: 714/704, 714/759, 714/758, 714/779, 714/781, 714/784, 714/786, 714/799, 714/800
• US Class Current: 714/704
• CPC Class Codes: G06F 11/00 Error detection; Error correction; Monitoring error detection, correction or monitoring in information storage based on relative movement between record carrier and transducer G11B20/18; monitoring, i.e. supervising the progress of recording or reproducing G11B27/36; in static stores G11C29/00
• CPC Class Codes: H03M 13/1515 Reed-Solomon codes
• CPC Class Codes: H03M 13/353 Adaptation to the channel

Abstract

Modem selection of Reed-Solomon codeword configuration to maximize error-corrected data rate given channel analysis. A lookup table of maximal codeword size given parity bytes and channel MSE allows precomputation.

Claims

1. A method of selection of codeword configuration, comprising:

(a) for a triple of (1) an integer R, (2) a number MSE, and (3) a number EC-BER, finding an integer N where a codeword of N bytes which includes R parity bytes yields an error-corrected error rate not greater EC-BER when used in a channel with a mean squared error of MSE and where N is the largest such integer not greater than an upper bound;

(b) repeating step (a) with a different integer R but with the same numbers MSE and EC-BER;

(c) selecting an N and R from the results of steps (a) and (b).