1. CCK / OFDM Closing Summary
doc.: IEEE /612
November 2001
November 2001
CCK / OFDM Closing Summary
Zyren, Webster, Halford
Intersil
Zyren, Webster, Halford Intersil

2. The TGg Opportunity TGg is not “late”
November 2001
The TGg Opportunity
TGg is not “late”
FCC opened spectrum to OFDM devices in May
FCC actions due to activities of this group
TGg will come out after a
802.11a rolling out now, but…
Good Technology Takes time to develop
802.11a took >2 years to develop after adoption as a standard
Good products have long lifetimes
Spectrum is not disposable
Zyren, Webster, Halford Intersil

3. CCK/OFDM Complements 802.11a
November 2001
CCK/OFDM Complements a
CCK/OFDM not a direct competitor with a
TGg has only 3 Channels as compared to 8 – 12 for a
CCK/OFDM compliments a by extending OFDM to the 2.4 GHz band
CCK/OFDM preserves backward compatibility
CCK/OFDM reaffirms commitment to OFDM as high rate “waveform-of-choice”
Is an important stepping stone to dual band
Zyren, Webster, Halford Intersil

4. What if we don’t approve CCK/OFDM?
November 2001
What if we don’t approve CCK/OFDM?
We will still have high-rate 2.4 GHz
Not standards-based
May or may not be based on OFDM
If not OFDM-based:
Proprietary solutions may compete with 5 GHz
Proprietary solutions will contribute to market confusion
Will definitely make dual band radio implementations more difficult to implement
Zyren, Webster, Halford Intersil

5. If we adopt CCK/OFDM 802.11 will deepen commitment to OFDM
November 2001
If we adopt CCK/OFDM
will deepen commitment to OFDM
One modulation scheme in both bands
CCK/OFDM is a step toward dual band radios
Baseband function of CCK/OFDM radio are nearly identical baseband functions for dual band radio
Incremetal cost of g is zero for dual band radio
Standards-based high rate 2.4 GHz
Higher data rates are achieved while providing backward compatibility with existing b systems
Based on multi-vendor technology
Zyren, Webster, Halford Intersil