Name
Title | ||
|---|---|---|
A 2.74-pJ/bit, 17.7-Gb/s Iterative Concatenated-BCH Decoder in 65-nm CMOS for NAND Flash Memory |
Abstract | ||
|---|---|---|
To improve the reliability of MLC NAND flash memory, this paper presents an energy-efficient high-throughput architecture for decoding concatenated-BCH (CBCH) codes. As the data read from the flash memory is hard-decided in practical applications, the proposed CBCH decoding method is a promising solution to achieve both high error-correction capability and energy efficiency. In the proposed CBCH decoding, the number of on-chip memory accesses consuming much energy is minimized by computing and updating syndromes two-dimensionally. To achieve an area-efficient hardware realization, row and column decoders are unified into one decoder and some syndromes are computed when they are needed. In addition, the decoding throughput is enhanced remarkably by skipping redundant decoding processes. Based on the proposed CBCH decoding architecture, a prototype chip is implemented in a 65-nm CMOS process to decode the (70528, 65536) CBCH code. The proposed decoder provides a decoding throughput of 17.7 Gb/s and an energy efficiency of 2.74 pJ/bit, being vastly superior to the state-of-the-art architectures. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1109/JSSC.2013.2275655 | J. Solid-State Circuits |
Keywords | Field | DocType |
nand circuits,integrated circuit reliability,concatenated codes,size 65 nm,bit rate 17.7 gbit/s,bch codes,column decoders,error correction codes,flash memory,error-correction capability,low-power architecture,row decoders,vlsi,decoding throughput,ecc,reliability,cbch,iterative decoding,mlc nand flash memory,cmos memory circuits,flash memories,on-chip memory | Concatenated error correction code,Sequential decoding,Flash memory,Computer science,Efficient energy use,Parallel computing,Chip,BCH code,CMOS,Electronic engineering,Decoding methods,Computer hardware | Journal |
Volume | Issue | ISSN |
48 | 10 | 0018-9200 |
Citations | PageRank | References |
5 | 0.52 | 0 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Youngjoo Lee | 1 | 74 | 18.85 |
| Hoyoung Yoo | 2 | 75 | 9.99 |
| Jaehwan Jung | 3 | 29 | 4.48 |
| Jihyuck Jo | 4 | 25 | 3.72 |
| In-Cheol Park | 5 | 888 | 124.36 |