1 research outputs found
A General Characterization of Sync Word for Asynchronous Communication
We study a problem of sequential frame synchronization for a frame
transmitted uniformly in slots. For a discrete memoryless channel (DMC),
Venkat Chandar et al showed that the frame length must scale with as
for the frame synchronization error to go to zero
(asymptotically with ). Here, denotes the transition probabilities of
the DMC and , defined as the synchronization threshold,
characterizes the scaling needed of for asymptotic error free frame
synchronization. We show that the asynchronous communication framework permits
a natural tradeoff between the sync frame length and the channel (usually
parameterised by the input). For an AWGN channel, we study this tradeoff
between the sync frame length and the input symbol power and
characterise the scaling needed of the sync frame energy for optimal
frame synchronisation.Comment: Submitted to IEEE Wireless Communication Letters. arXiv admin note:
substantial text overlap with arXiv:1506.0464