In this paper we introduce TFMCC, an equation-based multicast congestion control mechanism that extends the TCPfriendly TFRC protocol from the unicast to the multicast domain. The key challenges in the design of TFMCC lie in scalable round-trip time measurements, appropriate feedback suppression, and in ensuring that feedback delays in the control loop do not adversely affect fairness towards c...

of Master’s Thesis Academic Year 2007 Estimation Method of Multicast Group Size for Large Networks Summary Emerging large-scale IP Multicast applications and the availability of broadband multicast enabled networks are two important factors driving the growth of IP Multicast beyond the current base of users on education networks. To accommodate that growth, solutions are required to monitor the...

The multiuser multiple-input multiple-output (MU-MIMO) transmission scheme has drawn most attentions during the recent development of Long Term Evolution (LTE) systems. Based on the feedback information of the downlink channel, evolved NodeB may achieve multiple accesses via MIMO technology in MU-MIMO Transmission Mode and allow user equipments to share resources in frequency and time domain. I...

For large-scale multimedia distributions, multicast is the preferred method of communication. ASM (Any Source Multicast) and SSM (SourceSpecific Multicast) are the two types of multicast used. ASM is designed for either many-to-many or one-to-many communication. SSM is derived from ASM. SSM is used when only one session member is allowed to send data. An example use of SSM could be an IPTV broa...

We demonstrate that the sum-rate capacity of a memoryless Gaussian network at high signal-to-signal ratio (SNR) can be asymptotically doubled when feedback is available. To demonstrate this phenomenon we study two networks: the one-to-two scalar Gaussian broadcast channel (BC) and the twoto-two scalar Gaussian interference channel (IC). For the broadcast channel we show that if the noise sequen...

The simulation models in general are irreplaceable tools for testing and validating of the present or the proposed algorithms. This paper deals with the design of the multicast model with the one source using the RTP (Real Time Protocol) transport protocol for data delivering to the great number of receivers. The simulation results show the present situation in the sharing of control bandwidth ...

This paper considers multiple users accessing a common additive white Gaussian noise channel. The users are assigned signature waveforms, their signaling is synchronous, and hence the equivalent discrete-time model is a general Gaussian multiple-access channel (GMAC). A new class of receivers is proposed. The receivers within this class feature low-complexity detectors and allow the users to ch...

We address the problem of fairness in a feedback-controlled multicast video distribution scheme. In a fair scheme each receiver should receive a video stream with a quality that is commensurate with its capabilities or the capabilities of the path leading to it, regardless of other receivers or network paths. This fairness problem results from the fact that multi-cast communication trades econo...

We investigate reliable multicast communication over satellite networks. We compare a scenario where receivers can use a feedback channel to signal loss to a scenario where no feedback channel is available. We show that the introduction of a feedback channel is the key to allow for bandwidth-eecient, robust, and fully reliable multicast communication via satellite.