Thesis
Design of coded modulation for the additive white Gaussian noise channel with Tikhonov phase error
Washington State University
Master of Science (MS), Washington State University
2002
Handle:
https://hdl.handle.net/2376/87
Abstract
In this work, we investigate the computation of the pairwise error probability (PEP) for the additive white Gaussian noise channel with Tikhonov phase error, and its application to design of coded modulation. The PEP is based on the maximum likelihood (ML) decoding metric of the AWGN/Tikhonov channel. For an arbitrary signal constellation, we develop a method for exact computation of the PEP when the symbol sequence length is one, and derive an approximation for the PEP when the symbol sequence length is greater than one. Then we show by simulation that the approximate PEP can be used to predict trellis coded modulation (TCM) code performance. When the phase error is large, the PEP predicts TCM code performance better than the squared Euclidean distance. Then we investigate the search space for constituent encoders of parallel concatenated turbo TCM codes, compute the maximum weight two PEP of each code, and find the codes with smallest maximum weight two PEP. These codes are predicted to have the lowest error floor. Simulation results show that selected codes within the set of lowest error floor codes perform within about 0.6dB of constellation-constrained capacity.
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Details
- Title
- Design of coded modulation for the additive white Gaussian noise channel with Tikhonov phase error
- Creators
- Ying Zhu
- Contributors
- Benjamin Joseph Belzer (Degree Supervisor)
- Awarding Institution
- Washington State University
- Academic Unit
- Electrical Engineering and Computer Science, School of
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University; Pullman, Wash. :
- Identifiers
- 99900525273001842
- Language
- English
- Resource Type
- Thesis