| Presentation | 1996/3/18 Bit Error Rate Characteristics and Adaptive Demodulation in Optimum Demodulation Spread Spectrum System Nobuaki ITO, Satoshi SONOBE, Kohei OHTAKE, Noriyoshi KUROYANAGI, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | It has been reported that very high demodulation SN ratio improvements can be obtained by optimizing the despreading code under colored noise environments. In this paper, first, bit error rate (BER) characteristics of such the system are shown both thoretically and by computer simulation in case of sinusoidal and band expanded line noise environments. Next, considering the case that the transmission noise power spectrum density is unknown, an adaptive demodulation scheme is proposed, which optimizes the despreading code adaptively, by using decision feedback. When adopting a learning identification method as an adaption algorithm, it is obtained such good BER characteristics in less than 20 frames by computer simulation that are very close to those of the system to which the optimum despreading code is applied. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | optimum despreading code / Adaptive demodulation / Colored noise / Bit error rate / Learning identification |
| Paper # | IT95-67,ISEC95-62,SST95-128 |
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| Conference Information | |
| Committee | IT |
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| Conference Date | 1996/3/18(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Information Theory (IT) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Bit Error Rate Characteristics and Adaptive Demodulation in Optimum Demodulation Spread Spectrum System |
| Sub Title (in English) | |
| Keyword(1) | optimum despreading code |
| Keyword(2) | Adaptive demodulation |
| Keyword(3) | Colored noise |
| Keyword(4) | Bit error rate |
| Keyword(5) | Learning identification |
| 1st Author's Name | Nobuaki ITO |
| 1st Author's Affiliation | College of Engineering, Hosei Univ.() |
| 2nd Author's Name | Satoshi SONOBE |
| 2nd Author's Affiliation | College of Engineering, Hosei Univ. |
| 3rd Author's Name | Kohei OHTAKE |
| 3rd Author's Affiliation | College of Engineering, Hosei Univ. |
| 4th Author's Name | Noriyoshi KUROYANAGI |
| 4th Author's Affiliation | Faculty of Technology, Tokyo Engineering Univ. |
| Date | 1996/3/18 |
| Paper # | IT95-67,ISEC95-62,SST95-128 |
| Volume (vol) | vol.95 |
| Number (no) | 590 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |