| Presentation | 2002/12/3 A General Orthogonal Modulation in Intersymbol Interference Channels Ikuo OKA, |
|---|---|
| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper general orthogonal modulations are discussed to develop new modulations and to identify some widely used modulation schemes. Based on this general framework, optimum schemes for non-Gaussian channels under a given set of constraints can be derived. In general, only a local optimum can be considered to keep the optimization problem feasible. For software radios, the modulation should be changed by tracking this local optimum. The proposed model is based on orthonormal vectors, which are obtained by multidimensional rotations. All known orthogonal modulation schemes can be expressed by this model with certain parameters, and can be optimized against non-Gaussian channel impairments, for example, fading, radio frequency interference and intersymbol interference. Several widely used modulation schemes are renamed by their consecutive multidimensional rotation angles based on the general model proposed. New modulations are obtained by selecting parameters other than those of known modulations. New modulation examples in continuous wave (GW) interference, impulse interference, intersymbol interference channels are given to illustrate the corresponding local optima. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | General Orthogonal Modulation / CW Interference / Impulse Interference / ISI / Multidimensional Space / Rotation |
| Paper # | IT2002-38 |
| Date of Issue |
| Conference Information | |
| Committee | IT |
|---|---|
| Conference Date | 2002/12/3(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) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A General Orthogonal Modulation in Intersymbol Interference Channels |
| Sub Title (in English) | |
| Keyword(1) | General Orthogonal Modulation |
| Keyword(2) | CW Interference |
| Keyword(3) | Impulse Interference |
| Keyword(4) | ISI |
| Keyword(5) | Multidimensional Space |
| Keyword(6) | Rotation |
| 1st Author's Name | Ikuo OKA |
| 1st Author's Affiliation | Gradulate School of Engineering, Osaka City University() |
| Date | 2002/12/3 |
| Paper # | IT2002-38 |
| Volume (vol) | vol.102 |
| Number (no) | 494 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |