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Pulse Compression for TG4a

This document proposes a pulse compression code set for TG4a in the IEEE P802.15 Working Group for Wireless Personal Area Networks. It discusses peak voltage and PRF, preamble structure, and perfect balanced ternary sequences.

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Pulse Compression for TG4a

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  1. Project: IEEE P802.15 Working Group for Wireless Personal Area Networks (WPANs) Submission Title: [Pulse Compression for TG4a] Date Submitted: [19 July 2005] Source: [Ismail Lakkis] Company [Wideband Access, Inc.] Voice:[+1 858 642 9114], E-Mail: [ilakkis@widebandaccess.com] Abstract: [Pulse Compression proposal] Purpose: [Assist the group in the selection of a Pulse Compression Code Set] Notice: This document has been prepared to assist the IEEE P802.15. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor acknowledges and accepts that this contribution becomes the property of IEEE and may be made publicly available by P802.15. I. Lakkis et al.

  2. Contributors • Ismail Lakkis Wideband Access Inc. • Saeid Safavi Wideband Access Inc. • Francois Shin I2R • Michael Mc Laughlin decaWave • Andy Molisch Mitsubishi Electric • Philip Orlik Mitsubishi Electric • Zafer Sahinoglu Mitsubishi Electric • Vern Berthour Time Domain Corp. • Ryuji Khono NICT • Matt Welborn & Shahriar Emami Freescale Semiconductor • Shahriar Emami Freescale Semiconductor I. Lakkis et al.

  3. Agenda • Peak Voltage & PRF • Preamble Structure • Perfect Balanced Ternary Sequences (PBTS) • Summary I. Lakkis et al.

  4. PRI VPeak TC Relationship between PRF & Peak Power I. Lakkis et al.

  5. Technology CMOS 90nm 2.5 Vpp, Ternary CMOS 90nm 1 Vpp, Ternary TChip (nsec) 2 2 BW (MHz) 500 500 VPeak (v) 1.25 0.5 PAve (dBm) -14.31 -14.31 PPeak (dBm) 11.94 11.94 Peak PRF (MHz) @ VPeak 2.37 14.8 Technology CMOS 90nm 2.5 Vpp, Ternary CMOS 90nm 1 Vpp, Ternary TChip (nsec) 0.66 0.66 BW (MHz) 1500 1500 VPeak (v) 1.25 0.5 PAve (dBm) -9.54 -9.45 PPeak (dBm) 11.94 11.94 Peak PRF (MHz) @ VPeak 21.35 133.4 Minimum PRF vs Peak Power (CMOS 90nm) BW = 500 MHz BW = 1500 MHz I. Lakkis et al.

  6. Preamble Structure (Only Content of S field is finalized not the placement) • SYNC : Synchronization Field • SFD : Start Frame Delimiter Field • CE : Channel Estimation Filed Preamble Header Payload SYNC SFD CE S S S S S S 0 -S 0 -S S S S S or -S -S -S S S S 0 -S 0 -S S S S S I. Lakkis et al.

  7. The PBTSs (Length 31) I. Lakkis et al.

  8. The PBTSs (Length 127) I. Lakkis et al.

  9. Autocorrelation & Crosscorrelation (L = 31) I. Lakkis et al.

  10. PBTS according to List of Criteria I. Lakkis et al.

  11. PBTS according to List of Criteria I. Lakkis et al.

  12. Summary (Preamble Only) • Only the content of S field is specified (not the polarity or placement within the preamble) • Preamble length is an integer multiple of the S field • Mandatory Low PRF Mode • Adaptive Peak PRF (mechanism TBD) : 30.875 MHz & 7.71875MHz • All devices should support both PRFs • Codes : the set of 6 PBTSs of length 31 (within a cyclic shift) • Optional High PRF • Peak PRF: 247 MHz • Codes : the set of 5 PBTSs of length 127 (within a cyclic shift) I. Lakkis et al.

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