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Abstract In this system, we propose a new simple relaying strategy based on bit-interleaved convolutionally coded star quadrature amplitude modulation (QAM) along with coherent/noncoherent detection. Star-QAM is composed of multiple concentric circles of phase-shift keying (PSK). Exploiting this property, a hard limiter is used to enhance power amplifier (PA) efficiency at the relay. Moreover, we show that the proposed approach retains differential detectability, which results in a significant reduction of receiver complexity with robustness against phase ambiguity. By analyzing our proposed cooperation with coherent/noncoherent detection in terms of asymptotic pairwise error probability (PEP), we show that the full diversity order can be achieved on the condition that the minimum free distance of the convolutional codes is larger than the predetermined value specified by the number of available relays.
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IEEE PROJECTS 2013-2014
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ZEBROS PROJECTS
Office Address: No 4 / Flat No 3D, Sai Kiran Apts, First Main Road, Kasturba Nagar, Chennai-20 web: www.zebros.in e mail : [email protected] mob: 99400 98300,9500075001
A Peak Power Efficient Cooperative Diversity using Star-QAM
with Coherent/Noncoherent Detection
Abstract
In this system, we propose a new simple relaying strategy based on bit-
interleaved convolutionally coded star quadrature amplitude modulation (QAM) along
with coherent/noncoherent detection. Star-QAM is composed of multiple concentric
circles of phase-shift keying (PSK). Exploiting this property, a hard limiter is used to
enhance power amplifier (PA) efficiency at the relay. Moreover, we show that the
proposed approach retains differential detectability, which results in a significant
reduction of receiver complexity with robustness against phase ambiguity. By
analyzing our proposed cooperation with coherent/noncoherent detection in terms of
asymptotic pairwise error probability (PEP), we show that the full diversity order can
be achieved on the condition that the minimum free distance of the convolutional codes
is larger than the predetermined value specified by the number of available relays.
Furthermore, the effectiveness of the proposed scheme in terms of PA efficiency is
confirmed by comparing the statistical distributions of the corresponding instantaneous
signal powers. All the theoretical results agree with those obtained by computer
simulations.
ZEBROS PROJECTS
Office Address: No 4 / Flat No 3D, Sai Kiran Apts, First Main Road, Kasturba Nagar, Chennai-20 web: www.zebros.in e mail : [email protected] mob: 99400 98300,9500075001
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ZEBROS PROJECTS
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0th Review 1st Review
Abstract Existing System Disadvantages Proposed System Advantages Objective System Requirements System Architecture
Literature Survey Module List Module Description Data Flow Diagram Level DFD Module Wise DFD Problem Definition Review Document Explanation
2nd Review 3rd Review
Use case Diagram Class Diagram Collaboration Diagram Sequence Diagram Activity Diagram Testing & test cases Partial Code Screenshot for First two
module Review Document Explanation
Conclusion References Future Enhancement 65% code (Executable Format) Required Software Review Document Explanation
Final Review
Complete Code with Enhancement
Final Document (University Standard Format)
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