| Presentation | 2009-01-22 A Study on Partial Spectrum Transmission Method for Dynamic Spectrum Access Yasunori FUTATSUGI, Shousei YOSHIDA, Masayuki ARIYOSHI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Dynamic Spectrum Access (DSA) has attracted attentions as a promising technology for improving frequency spectrum utilization. For DSA, low-priority system is allowed to transmit the spectrum without interfering high-priority system. It is preferable to select modulation scheme which is appropriate for the low-priority user's condition and radio environment considering required E_b/N_0, frequency efficiency, PAPR. In the case of packet communication, Adaptive Modulation and channel Coding (AMC) is adopted. When received SINR condition is better, higher order modulation scheme such as Quadrature Amplitude Modulation (QAM) is selected in order to transmit high speed packets. However, the higher order QAM may occur link performance degradation due to the shorter Euclidean distance in the constellation. Meanwhile, lower order modulation scheme such as Phase Shift Keying (PSK) is capable of preventing such performance degradation. Thus, it is expected to improve link performance by using PSK instead of QAM. In this paper, we propose a Partial Spectrum Transmission (PST) method for single carrier transmission. The proposed method would be applicable for the DSA systems. It is shown by computer simulations that the performance of PST outperforms the performance of conventional QAM when coding rate and roll-off factor are high value. Specifically, required E_b/N_0 at Block Error Rate (BLER) of 10^<-2> and PAPR for the proposed PST (1/2) is reduced by approximately maximum 1dB comparing to that of 16QAM respectively, under the conditions of coding rate of 8/9 and roll-off factor α=0.7～1.0. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Single Carrier / Partial Spectrum / Sequence Estimation / Iterative Equalization / Interference Cancellation |
| Paper # | SR2008-69 |
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| Conference Information | |
| Committee | SR |
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| Conference Date | 2009/1/15(1days) |
| Place (in Japanese) | (See Japanese page) |
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| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Software Radio(SR) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Partial Spectrum Transmission Method for Dynamic Spectrum Access |
| Sub Title (in English) | |
| Keyword(1) | Single Carrier |
| Keyword(2) | Partial Spectrum |
| Keyword(3) | Sequence Estimation |
| Keyword(4) | Iterative Equalization |
| Keyword(5) | Interference Cancellation |
| 1st Author's Name | Yasunori FUTATSUGI |
| 1st Author's Affiliation | System Platforms Research Laboratories, NEC Corporation() |
| 2nd Author's Name | Shousei YOSHIDA |
| 2nd Author's Affiliation | Intellectual Asset Development Promotion Division, NEC Corporation |
| 3rd Author's Name | Masayuki ARIYOSHI |
| 3rd Author's Affiliation | System Platforms Research Laboratories, NEC Corporation |
| Date | 2009-01-22 |
| Paper # | SR2008-69 |
| Volume (vol) | vol.108 |
| Number (no) | 400 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |