| Presentation | 2006-05-25 Serially Concatenated Doubly Differential PSK for Improved Noncoherent Iterative Detection(HISC2006) Marcin Sikora, Koji Ishibashi, Daniel J. Costello, Ryuji Kohno, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Serial concatenation of a convolutional encoder, a bit interleaver, and a recursive modulator provides strong protection against transmission errors and can be decoded iteratively. When used for transmission over channels introducing a random and potentially time varying phase rotation, noncoherent softinput soft-output demodulation must be used at the receiver. In many cases, however, noncoherent demodulation effectively removes the recursiveness of the modulator, thus harming the convergence of iterative decoding. In this paper we propose a serially concatenated system with doubly differential phase shift keyed (DDPSK) modulation employing a generator polynomial G(D)=1/(1-D^2). We demonstrate that this DDPSK system retains full recursiveness under noncoherent demodulation and hence assures good convergence behavior for iterative decoding. Also, by regarding such modulation as either doubly differential with generator polynomial G(D)=1/(1-D)(1+D), or as two parallel singly differential modulations with polynomial G(D)=1/(1-D) acting independently on odd and even symbols, we propose two distinct approaches to performing noncoherent demodulation of DDPSK. We demonstrate good error performance and good iterative decoding convergence behavior by means of simulation and extrinsic information transfer (EXIT) charts. |
| Keyword(in Japanese) | (See Japanese page) |
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| Paper # | IT2006-18 |
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| Committee | IT |
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| Conference Date | 2006/5/18(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Registration To | Information Theory (IT) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Serially Concatenated Doubly Differential PSK for Improved Noncoherent Iterative Detection(HISC2006) |
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| 1st Author's Name | Marcin Sikora |
| 1st Author's Affiliation | Department of Electrical Engineering University of Notre Dame() |
| 2nd Author's Name | Koji Ishibashi |
| 2nd Author's Affiliation | Division of Physics, Electrical and Computer Engineering Yokohama National University |
| 3rd Author's Name | Daniel J. Costello |
| 3rd Author's Affiliation | Department of Electrical Engineering University of Notre Dame |
| 4th Author's Name | Ryuji Kohno |
| 4th Author's Affiliation | Division of Physics, Electrical and Computer Engineering Yokohama National University |
| Date | 2006-05-25 |
| Paper # | IT2006-18 |
| Volume (vol) | vol.106 |
| Number (no) | 60 |
| Page | pp.pp.- |
| #Pages | 5 |
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