### Abstract

In this paper we consider multicast systems that use orthogonal layered source coding over a Rayleigh fading environment. The different layers are transmitted over orthogonal frequency bands with pre-specified ratios of the total bandwidth. For this kind of systems, we optimally allocate the transmission power, and hence the decoding threshold of each layer, in order to maximize the expected satisfaction defined by a utility function of the decoded rates of the users. In particular, we use the Lagrangian dual problem in order to efficiently solve the primal non-convex problem for any number of layers. Furthermore, we show that for some channel statistics, it is not optimal to transmit all the layers, rather we should allocate zero power to some of the upper layers in order to maximize the expected user satisfaction. In this particular case, the bandwidth of the untransmitted layers can be allocated to the lower layers for further enhancement of the expected user satisfaction. We discuss how to modify the solution structure to optimize the power allocation in this case.

Original language | English |
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Title of host publication | ICT 2010: 2010 17th International Conference on Telecommunications |

Pages | 211-218 |

Number of pages | 8 |

DOIs | |

Publication status | Published - 2010 |

Event | 2010 17th International Conference on Telecommunications, ICT 2010 - Doha, Qatar Duration: 4 Apr 2010 → 7 Apr 2010 |

### Other

Other | 2010 17th International Conference on Telecommunications, ICT 2010 |
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Country | Qatar |

City | Doha |

Period | 4/4/10 → 7/4/10 |

### Fingerprint

### ASJC Scopus subject areas

- Computer Networks and Communications

### Cite this

*ICT 2010: 2010 17th International Conference on Telecommunications*(pp. 211-218). [5478742] https://doi.org/10.1109/ICTEL.2010.5478742

**Utility maximization for layered multimedia transmission via orthogonal multiplexing.** / Shaqfeh, Mohammad; Mesbah, Wessam; Alnuweiri, Hussein.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

*ICT 2010: 2010 17th International Conference on Telecommunications.*, 5478742, pp. 211-218, 2010 17th International Conference on Telecommunications, ICT 2010, Doha, Qatar, 4/4/10. https://doi.org/10.1109/ICTEL.2010.5478742

}

TY - GEN

T1 - Utility maximization for layered multimedia transmission via orthogonal multiplexing

AU - Shaqfeh, Mohammad

AU - Mesbah, Wessam

AU - Alnuweiri, Hussein

PY - 2010

Y1 - 2010

N2 - In this paper we consider multicast systems that use orthogonal layered source coding over a Rayleigh fading environment. The different layers are transmitted over orthogonal frequency bands with pre-specified ratios of the total bandwidth. For this kind of systems, we optimally allocate the transmission power, and hence the decoding threshold of each layer, in order to maximize the expected satisfaction defined by a utility function of the decoded rates of the users. In particular, we use the Lagrangian dual problem in order to efficiently solve the primal non-convex problem for any number of layers. Furthermore, we show that for some channel statistics, it is not optimal to transmit all the layers, rather we should allocate zero power to some of the upper layers in order to maximize the expected user satisfaction. In this particular case, the bandwidth of the untransmitted layers can be allocated to the lower layers for further enhancement of the expected user satisfaction. We discuss how to modify the solution structure to optimize the power allocation in this case.

AB - In this paper we consider multicast systems that use orthogonal layered source coding over a Rayleigh fading environment. The different layers are transmitted over orthogonal frequency bands with pre-specified ratios of the total bandwidth. For this kind of systems, we optimally allocate the transmission power, and hence the decoding threshold of each layer, in order to maximize the expected satisfaction defined by a utility function of the decoded rates of the users. In particular, we use the Lagrangian dual problem in order to efficiently solve the primal non-convex problem for any number of layers. Furthermore, we show that for some channel statistics, it is not optimal to transmit all the layers, rather we should allocate zero power to some of the upper layers in order to maximize the expected user satisfaction. In this particular case, the bandwidth of the untransmitted layers can be allocated to the lower layers for further enhancement of the expected user satisfaction. We discuss how to modify the solution structure to optimize the power allocation in this case.

UR - http://www.scopus.com/inward/record.url?scp=77954555475&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77954555475&partnerID=8YFLogxK

U2 - 10.1109/ICTEL.2010.5478742

DO - 10.1109/ICTEL.2010.5478742

M3 - Conference contribution

SN - 9781424452477

SP - 211

EP - 218

BT - ICT 2010: 2010 17th International Conference on Telecommunications

ER -