Resource Allocation in OFDMA Wireless Communications Systems Supporting Multimedia Services



Abstract:
We design a resource allocation algorithm for downlink of orthogonal frequency division multiple access (OFDMA) systems supporting real-time (RT) and best-effort (BE) services simultaneously over a time-varying wireless channel. The proposed algorithm aims at maximizing system throughput while satisfying quality of service (QOS) requirements of the RT and BE service ....etc

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THE ROLE OF ZIGBEE TECHNOLOGY IN FUTURE DATA COMMUNICATION SYSTEM
ABSTRACT
ZigBee is an IEEE 802.15.4 standard for data communications with business and consumer devices. It isdesigned around low-power consumption allowing batteries to essentially last forever. The ZigBee standardprovides network, security, and application support services operating on top of the IEEE 802.15.4 MediumAccess Control (MAC) and Physical Layer (PHY) wireless standard. It employs a suite of technologies toenable scalable, self-organizing, self-heal ....etc

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I need a matlab code for a ofdma femtocell networks with 9 femtocells for power minimaization.

Refer the IEEE paper : Power minimization based resource allocation for interference mitigation in ofdma femtocell networks
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RESOURCE ALLOCATION IN OFDMA WIRELESS COMMUNICATIONS SYSTEMS SUPPORTING MULTIMEDIA SERVICES- NETWORKING

We design a resource allocation algorithm for down-link of orthogonal frequency division multiple access (OFDMA) systems supporting real-time (RT) and best-effort (BE) services simultaneously over a time-varying wireless channel. The proposed algorithm aims at maximizing system throughput while satisfying quality of service (QoS) requirements of the RT and BE services. We take two kinds of QoS requirements into account. One is the require ....etc

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I need a help to do a MBA project.It is very urgent.The title is Role of internet communication in changing the individuals lifestyle.It should be a acedemic project so i need quick reply.Please help me. ....etc

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Role & Role Effectiveness
Role, Role Space & Role Set
• Mutual obligations under a social system
• Functions one performs in response to the expectations
• Role is defined with the expectations of the role senders, including those of the role occupant.
• Role Space is a dynamic relationship between the self and the various roles an individual occupies and also amongst these roles
• Role Set is a subsystem or inter relationships between a particular role and the other roles in an organi ....etc

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Orthogonal Frequency Division Multiple Access (OFDMA) is a multiple access scheme for OFDM systems. It works by assigning a subset of subcarriers to individual users.




OFDMA features

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OFDMA is the 'multi-user' version of OFDM
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Functions by partitioning the resources in the time-frequency space, by assigning units along the OFDM signal index and OFDM sub-carrier index
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Each OFDMA user transmits symbols using sub-carriers that remain orthogonal to those of other users
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More th ....etc

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Abstract:
Orthogonal Frequency-Division Multiple Access (OFDMA) is a multi-user version. Multiple access is achieved in OFDMA by assigning subsets of subcarriers to individual users. This allows simultaneous low data rate transmission from several users, OFDM is sometimes referred to as discrete multi-tone modulation, instead of a single carrier being modulated, a large number of evenly spaced subcarriers are modulated using some m-ary of QAM. This is a spread-spectrum technique that increases the efficiency of data communications by increasin ....etc

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