throughput optimization in high speed downlink packet access (hsdpa) - abstract by coreieeeprojects

Core IEEE Projects (Division of Conceptz) #108,5th Main, 4th Cross, Hanumanth Nagar, Basavanagudi, Bangalore-50, Website: www.coreieeeprojects.com contact: 9535052050 ABSTRACT In this paper, we investigate throughput optimization in High Speed Downlink Packet Access (HSDPA). Specifically, we propose offline and online algorithms for adjusting the Channel Quality Indicator (CQI) used by the network to schedule data transmission. In the offline algorithm, a given target BLER is achieved by adjusting CQI based on ACK/NAK history. By sweeping through different target BLERs, we can find the throughput optimal BLER offline. This algorithm could be used not only to optimize throughput but also to enable fair resource allocation among mobile users in HSDPA. In the online algorithm, the CQI offset is adapted using an estimated short term throughput gradient without specifying a target BLER. An adaptive stepsize mechanism is proposed to track temporal variation of the environment. We investigate convergence behavior of both algorithms. Simulation results show that the proposed offline algorithm can

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Page 1: Throughput Optimization in High Speed Downlink Packet Access (HSDPA) - Abstract by Coreieeeprojects

Core IEEE Projects (Division of Conceptz)

#108,5th Main, 4th Cross, Hanumanth Nagar, Basavanagudi, Bangalore-50, Website: www.coreieeeprojects.com contact: 9535052050

ABSTRACT

In this paper, we investigate throughput optimization in

High Speed Downlink Packet Access (HSDPA). Specifically, we

propose offline and online algorithms for adjusting the Channel

Quality Indicator (CQI) used by the network to schedule data

transmission. In the offline algorithm, a given target BLER is

achieved by adjusting CQI based on ACK/NAK history. By

sweeping through different target BLERs, we can find the

throughput optimal BLER offline. This algorithm could be used not

only to optimize throughput but also to enable fair resource

allocation among mobile users in HSDPA. In the online algorithm,

the CQI offset is adapted using an estimated short term

throughput gradient without specifying a target BLER. An

adaptive stepsize mechanism is proposed to track temporal

variation of the environment. We investigate convergence

behavior of both algorithms. Simulation results show that the

proposed offline algorithm can achieve the given target BLER with

good accuracy. Both algorithms yield up to 30% HSDPA

throughput improvement over that with 10% target BLER.

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http://www.coreieeeprojects.com/

http://coreieeeprojects.com/

Page 2: Throughput Optimization in High Speed Downlink Packet Access (HSDPA) - Abstract by Coreieeeprojects

Core IEEE Projects (Division of Conceptz)

#108,5th Main, 4th Cross, Hanumanth Nagar, Basavanagudi, Bangalore-50, Website: www.coreieeeprojects.com contact: 9535052050

ieee projects on cloud computing, ieee projects 2011 on networking, ieee projects on networking and network security, ieee projects 2011 in Bangalore, ieee projects in java, ieee projects in .net, ieee projects in asp.net, ieee projects in Bangalore, ieee Academic Projects, ieee, ieee Projects Bangalore, ieee Software Projects, Latest IEEE Projects, IEEE Student Projects, IEEE Final year Student Projects, Final Year Projects, ENGINEERING PROJECTS, MCA projects, BE projects, BCA Projects, JAVA projects, J2EE projects, .NET projects, Students projects, ieee Projects in Bangalore, M-tech Internship in Company-tech Projects in Bangalore, Real Time Projects.

http://www.coreieeeprojects.com/

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