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PSS4: Four-Phase Shifted Sinusoid Symbol Signaling for High Speed I/O interconnects.
- Source :
-
Computers & Electrical Engineering . Apr2016, Vol. 51, p104-117. 14p. - Publication Year :
- 2016
-
Abstract
- Various signaling techniques have been considered for I/O interconnects at 25 Gb/s or higher. However, they either suffer from high baud rate, as in the case of NRZ, or an excess signal-to-noise ratio penalty, as in the case of PAM-4. To overcome these problems, a four-phase shifted sinusoid symbol (PSS-4) signaling method is proposed that can be readily applied to high-speed I/O transceivers. By using PSS-4, the SNR penalty can be reduced from PAM-4; our theoretical analysis has revealed that the SNR performance of the PSS-4 is 6.5 dB better than that of PAM-4 with comparable bandwidth. The transistor-level simulation results have shown that PSS-4 has an average of twice larger vertical eye opening than PAM-4. In addition, the supply voltage sensitivity of PSS-4 is 55% and 20% less than that of PAM-4 and NRZ, respectively, and the power consumption of PSS-4 is 13.5% lower than that of PAM-4. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00457906
- Volume :
- 51
- Database :
- Academic Search Index
- Journal :
- Computers & Electrical Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 116002017
- Full Text :
- https://doi.org/10.1016/j.compeleceng.2015.11.024