Hello all,
On Table 275 (page 371) of IEEE 802.16e-2005, it specifies that boosting
with range -12 dB to +9 dB is allowable for bursts. However, this would introduce
a huge value on power variable. For example, when N_FFT = 1024, a non-first PUSC zone
only uses one major group (i.e. 6 subchannels) with -12 dB burst boosting on every burst within the zone,
its power would be -12 - 10log10(6/10) = -14.22 dB smaller than a non-first PUSC zone
employing 1/3 total data carriers. On the other hand, for FUSC with +9 dB burst boosting on every burst
within the zone, its power is around 9 + 4.77 dB larger than the non-first PUSC zone employing 1/3 total
data carriers. When this kind of PUSC zone using only one major group and with -12 dB burst boosting
coexists with the FUSC zone with +9 dB burst boosting in the same down-link subframe, a total dynamic
range around 28 dB would happen between these two zones.
My questions are:
1. For base station (BS) manufacturers, would they really allocate these two zones with extreme power
variations within the same downlink sub-frame such that +28 dB power variation happens in the same sub-frame?
2. For base station (BS) manufacturers, provided the answer to the first question is positive, would they
transmit bursts to a mobile station (MS) within a sub-frame such that the MS has to accommodate this 28 dB dynamic range?
Any comments or suggestions are highly appreciated on this power variation issue. Thanks.
Best regards,
Lepidus.
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