[Sls-rfm] CCSDS RFM WG Spring meeting - first set of comments received on 3 DDOR inputs

[Enrico.Vassallo at esa.int]

Dear All,

please see below the first set of comments received. They were provided by 
Wai who did indicate he had no comments on SLS-RFM_20-03.

Please do not start replying at this stage. On May 6, I will discuss with 
Jim how to handle all received comments.

Regards, Enrico

----- Forwarded by Enrico Vassallo/esoc/ESA on 21/04/20 11:22 -----

From:   "Fong, Wai H. (GSFC-5670)" <wai.h.fong at nasa.gov>
To:     "Enrico.Vassallo at esa.int" <Enrico.Vassallo at esa.int>
Cc:     "Rodriguez, Shannon (GSFC-5670)" <shannon.rodriguez-1 at nasa.gov>, 
"Lee, Wing-tsz (GSFC-5670)" <wing-tsz.lee-1 at nasa.gov>, "Sank, Victor J. 
(GSFC-567.0)[SCIENCE SYSTEMS AND APPLICATIONS INC]" 
<victor.j.sank at nasa.gov>
Date:   20/04/20 18:54
Subject:        Re: [EXTERNAL] [Sls-rfm] Fw: CCSDS RFM WG Spring meeting - 
first two inputs from DDOR WG



Enrico,

Here are my comments to these two papers:

Comments to SLS-RFM_20-04:  If predistortion is required according to 
SLS-RFM_20-05, then why is it not in the considerings or recommendations?

Comments to SLS-RFM_20-05:  1. What form of predistortion is used in the 
implementation? How much additional complexity is added? 2. It is not 
clear to me how the frequency hopping achieves high sub-carrier frequency 
separation. The subcarrier spectrum becomes disjointed according to 
diagram. Please elaborate further.

Regards,

Wai Fong



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