1. FEC Ad Hoc Group Activity Update
Month 1998
doc.: IEEE /xxx
July 2002
FEC Ad Hoc Group Activity Update
Lior Ophir
Texas Instruments
Broadband Communications in Israel
Herzlia, Israel
L. Ophir, Texas Instruments

2. Summary (as of 7/7/02) Held 3 conference calls One outstanding issue:
July 2002
Summary (as of 7/7/02)
Held 3 conference calls
11 active participants
Minutes can be found in document 02/394r3
One outstanding issue:
Error propagation phenomenon of current FEC proposal in OFDM modes
Group feels this makes the current FEC proposal broken, and needs to be fixed
4 alternatives mentioned/presented/uploaded
No consensus yet…
L. Ophir, Texas Instruments

3. Proposed solutions for FEC problem
July 2002
Proposed solutions for FEC problem
Dual scrambler solution
Presented in the May meeting by Heegard et al., doc. 02/325
Introduce 2 additional known bytes to the MAC header
Submission by Ojard, doc. 02/414
Introduce 4 additional known bytes to the MAC header
Discussed by Ghosh, doc. ???
Maintain scrambler seed tables
Submission by Lewis, doc. 02/415
L. Ophir, Texas Instruments

4. Recommendation Continue discussion, and
July 2002
Recommendation
Continue discussion, and
Choose between the available alternatives in order to solve FEC problem
L. Ophir, Texas Instruments