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Hi Mariana, Thanks for the comments. The resolutions are
below. Paul. From: Mariana
Goldhamer [mailto:marianna.goldhammer@alvarion.com] Hi, I would like first to thank Paul for its efforts in finishing this
document. I have some comments on the document, as follows: 1. SUI
model reference in [4]: it is actually the r4 of the document
29:[ http://www.ieee802.org/16/tg3/contrib/802163c-01_29r4.pdf 2. In
eq. 2 was introduced "mean" –
this is misleading, as we
decided to use the statistical model and we
give the standard deviation below. I
propose to delete this word.[ 3. Are
consistent the numbers for noise
figure and implementation loss
and the numbers for sensitivities given later? I would suggest to keep only the
sensitivities and the SNR.[ 4. 802.16h
draft mentions Tx/Rx = 60/40 split of the MAC frame. However this document mentions 26:21 which is
different.[ 5. Interference
thresholds for frame error · There is
no direct linkage with energy detection threshold · The fast fade margin and any other margins (like
power control error) shall be included in a general margin. This margin will be used to increase the equivalent interference
level. See the quote from 29r4: · "However, for
non-LOS cases, temporal fading requires us to allow for a fade margin. The
value of this margin depends on the Ricean K-factor of the fading, the QoS
required and the use of any fade mitigation measures in the system. Two ways of
allowing for the fade margin then arise; either the C/I cdf is shifted left as
shown below or the C/I required for a non-fading channel is increased by the
fade margin. For example, if QPSK requires a C/I of 14 dB without fading, this
becomes 24 dB with a fade margin of 10 dB." I propose the following text to replace the existing
one: Interference thresholds
for frame error calculation The interference threshold for frame error
calculation is a method used to determine if a frame is received in
error. The best way to determine if a frame is in error is by simulating
the wireless channel and the receiver. A simplified method may use the criteria
below, which shall be true for the full duration of the received frame:
S/(I+N) > SNR + FM .[ where: - S – signal power - N – noise level - I – interference level - FM
- fade margin. Mariana Mariana Goldhamer Director - Strategic
Technologies
Alvarion, Ltd. 10 years
of wireless expertise
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544- 22 55 48
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mariana.goldhamer@alvarion.com
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