| Presentation | 2003/6/17 Effect of Carrier Phase Error on Turbo-Coded QAM Systems Tadashi MINOWA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We present the channel capacity, specially the average mutual information (AMI), of an additive white Gaussian noise (AWGN) channel in the presence of phase noise, and investigate the effect of phase noise impairment on capacity-approaching codes that normally operate in low signal-to-noise ratio (SNR) regions. It is shown through semi-analytical derivation that decreasing the information rate from its ideal capacity to an information rate lower than its inherent capacity significantly mitigates the impairment caused by phase noise, and that operating systems in the low SNR region also lessen the phase noise impairment by transforming typical phase noise behavior into Gaussian-like behavior. We also demonstrate by computer simulation using turbo-coded modulation with high-order quadrature amplitude modulation (QAM) signals that the use of capacity-approaching codes makes transmission systems invulnerable to phase noise. To verify the effect of capacity-approaching codes on phase noise, simulation results of turbo-coded modulation are also compared to that of trellis-coded modulation, which is an example of a conventional error-correcting code (ECC) operating at a relatively high SNR. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | average mutual information / carrier tracking error / turbo codes / QAM signals |
| Paper # | WBS2003-34,SAT2003-26 |
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| Conference Information | |
| Committee | SAT |
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| Conference Date | 2003/6/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Satellite Telecommunications (SAT) |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Effect of Carrier Phase Error on Turbo-Coded QAM Systems |
| Sub Title (in English) | |
| Keyword(1) | average mutual information |
| Keyword(2) | carrier tracking error |
| Keyword(3) | turbo codes |
| Keyword(4) | QAM signals |
| 1st Author's Name | Tadashi MINOWA |
| 1st Author's Affiliation | Kashima Space Research Center, Communications Research Laboratory() |
| Date | 2003/6/17 |
| Paper # | WBS2003-34,SAT2003-26 |
| Volume (vol) | vol.103 |
| Number (no) | 141 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |