Streaming Transmitter over Block-Fading Channels with Delay Constraint

Details Streaming Transmitter over Block-Fading Channels with Delay Constraint Streaming Transmitter over Block-Fading Channels with Delay Constraint

2012-03-13

arxiv.org/abs/1203.2870v2

Computer Science

Information Theory

Scientific paper

Data streaming transmission, in which the data arrives at the transmitter gradually over time is studied. It is assumed that the transmitter receives a new message at each channel block at a constant rate which is fixed by an underlying application, and tries to broadcast these messages to users within a certain deadline. The channels are assumed to be block fading and independent over blocks and users. The performance measure is the average total rate of received information at the users within the transmission deadline. Three different encoding schemes are proposed and compared with an informed transmitter upper bound in terms of the average total rate for a set of users with varying channel qualities. Analytical upper bounds on the average total rate are derived for all the proposed schemes. It is shown that no single transmission strategy dominates the others at all channel settings, and the best transmitter streaming scheme depends on the distribution of the average channel conditions over the users.

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