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| n |
Maintaining
a high data-rate (23.5 Mbit/s) is power
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consuming
- problematic for mobile terminals
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– |
packet
header with low bit-rate comprising receiver information
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only
receiver(s) address by a packet continue receiving
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| n |
Frame
structure
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– |
LBR
(Low Bit-Rate) header with 1.4 Mbit/s
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450
bit synchronization
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– |
minimum
1, maximum 47 frames with 496 bit each
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– |
for
higher velocities of the mobile terminal (> 1.4 m/s) the
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maximum
number of frames has to be reduced
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| n |
Modulation
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– |
GMSK
for high bit-rate, FSK for LBR header
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