Capacity-Based Parameter Optimization of Bit-Interleaved Coded CPM With Differential Detection

Seshadri, Rohit Iyer; Valenti, Matthew C.

doi:10.1109/tvt.2007.901078

Cited by 8 publications

(9 citation statements)

References 35 publications

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“…is a function of the code rate R c and N u . For convolutional coded CPM (CC-CPM) systems, nonrecursive convolutional codes of constraint length K = 3 and K = 4, with generator polynomials (5, 7) octal and (15,17) octal, respectively, are employed for FEC with higher code rates obtained by puncturing the rate 1/2 constituent codes [9]. The encoded bit sequence is fed to the bit-interleaver Π with permutation indices…”

Section: Transmittermentioning

confidence: 99%

“…where Δ f is the difference between the center frequencies of two adjacent carriers. In multicarrier, coded CPM systems, the energy and bandwidth efficiency is influenced by the choice of M, h, pulse shape, memory, the FEC code and its rate, and the adjacent carrier spacing [16,17]. As an example, increasing h, while keeping the remaining parameters the same, typically results in increased energy efficiency, but at the expense of bandwidth.…”

Section: Configurations At Different Spectral Efficienciesmentioning

confidence: 99%

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Continuous phase modulation for broadband satellite communications: design and trade‐offs

Beidas

Cioni

Bie³

et al. 2013

Satell Commun Network

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SUMMARY In this paper, we introduce the continuous phase modulations mode of the second‐generation broadband satellite communications return link Digital Video Broadcast Interactive Satellite System standard. Starting from a detailed discussion about the impairments faced in a typical broadband satellite system user set‐up, we introduce the waveform selection rationale, the design trade‐offs, and the waveform performance under realistic system assumptions. We show that the designed continuous phase modulations mode exhibits an excellent trade‐off between performance and robustness to nonlinear distortions at low and medium spectral efficiency thus suggesting its adoption for the consumer market profile of the Digital Video Broadcast Interactive Satellite System. Copyright © 2013 John Wiley & Sons, Ltd.

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Section: Transmittermentioning

confidence: 99%

Section: Configurations At Different Spectral Efficienciesmentioning

confidence: 99%

Continuous phase modulation for broadband satellite communications: design and trade‐offs

Beidas

Cioni

Bie³

et al. 2013

Satell Commun Network

View full text Add to dashboard Cite

show abstract

“…In this section, the effectiveness of the proposed SISO demodulator for SCCPM is evaluated. The selected convolutional encoder has a generator polynomial [5,7] 8 , constraint length of 3 and rate of 1/2. A random interleaver is used and, for simplicity, MSK is adopted.…”

Section: Simulation Resultsmentioning

confidence: 99%

“…Pr(a k ) is assigned according to L e (a k ); to convergence to a small BER at the cost of more iterations. However, the better performance of code [5,7,7] 8 over the code [5,7] 8 is achieved at the price of a reduced bandwidth efficiency. Note also that a decoder for a code with a longer constraint length requires a higher computational complexity.…”

Section: Truncated Bcjr Algorithm and Kalman Filteringmentioning

confidence: 99%

Novel data detection and channel estimation methods for coded and uncoded CPM signals

Wang¹

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Abeysekera. With his exceptional generosity and invaluable help, I developed the ability to conduct meaningful research. He always had good ideas to share, and provided easy ways to start. He advised me how to conduct literature review, how to embody research problems and solve them, and how to organize and write papers with his great patience and expertise. I would like to express my gratitude and appreciation to him for what he has done for me. His trust and support have been the main source of inspiration and impetus for me. His professional knowledge and experience enhanced the depth and width of the thesis.

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“…where p(c j |λ j ) is the probability that the code bit is c j given that the LLR is λ j . Equation 4.2 can be calculated in the log domain using [21]…”

Section: Information-outagementioning

confidence: 99%

Relay communications over frequency-selective fading channels

Mazzie¹

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Wireless communications over long distances can be assisted by a third radio acting as a relay. If the relay is placed close to the source, then the source-relay link will be characterized as a fairly benign additive white Gaussian noise (AWGN) channel. However, the long distance link from relay to destination is susceptible to frequency-selective fading. This thesis explores the design and analysis of a particular relay communication system characterized by a low power source, a relay that is close to the source, and a frequencyselective channel from relay to destination. Because the direct link from source to destination is very weak, it is not exploited, but rather communications is via a traditional two-hop process. Link design is based on the high speed download packet access (HSDPA) standard, which uses a combination of turbo coding, hybrid-ARQ, and multicode CDMA. To provide further diversity, the relay-destination link uses a secondary spreading code, rake reception, and multiple receive antennas. An extensive analysis was conducted to study the influence of a wide variety of link configurations and channel conditions. The study was accelerated through the use of a quasi-analytical approach based on the concept of information-outage, which allows the link to be simulated without requiring a turbo decoder. I would first like to thank Dr. Valenti, who has been of great help in completing this thesis. There is no way I could have made it through without his guidance. I would also like to thank the members of my committee, Dr. Reynolds and Dr. Schmid. I have enjoyed taking their classes, along with the challenges they presented. I would like to also thank my friends, particularly David Buckingham, Phillip Green, and Josh Pulice. They made this extra time in school much more bearable. Without them, I am not sure I would have had the energy to continue my studies. Lastly, I would like to thank my parents who have supported everything that I have done throughout my life, and will continue to do so.

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Capacity-Based Parameter Optimization of Bit-Interleaved Coded CPM With Differential Detection

Cited by 8 publications

References 35 publications

Continuous phase modulation for broadband satellite communications: design and trade‐offs

Continuous phase modulation for broadband satellite communications: design and trade‐offs

Novel data detection and channel estimation methods for coded and uncoded CPM signals

Relay communications over frequency-selective fading channels

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