| Presentation | 2013-10-25 A Study of Bit Error Rate Improving Methods Combining with Synchronous Acquisition for Digital Public Private Mobile Radio Systems Employing Heterogeneous Cognitive Radio Masafumi MORIYAMA, Takeo FUJII, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We have studied a heterogeneous cognitive radio system which combines digital public private mobile radio systems (DPPMRS) and commercial mobile wireless communication systems (CMWCS). The cognitive radio systems can improve bit error rate (BER) performance of the DPPMRS by receiving subsidiary information transmitted from the CMWCS when DPPMRS's communication quality has got worse. The subsidiary information is a part of information of CMWCS. However, the problem with the cognitive radio systems is that the subsidiary information cannot be utilized when the communication quality of the DPPMRS becomes extremely poor and synchronization between DPPMRS and CMWCS is lost. For this reason, we propose an efficient method for both of assistance of timing synchronous acquisitions and BER improvements using the subsidiary information for differentially-encoded π/4 shift QPSK DPPMRS. Moreover, to evaluate the proposed method, we performed computer simulation and showed probability of obtaining the timing synchronization, jitter characteristics when the timing synchronization has been obtained and BER improvement performances. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Digital Public Private Mobile Radio Systems / cognitive radio / convolutional code / π/4 shift QPSK / timing synchronization |
| Paper # | SR2013-74 |
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| Committee | SR |
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| Conference Date | 2013/10/17(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | 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 of Bit Error Rate Improving Methods Combining with Synchronous Acquisition for Digital Public Private Mobile Radio Systems Employing Heterogeneous Cognitive Radio |
| Sub Title (in English) | |
| Keyword(1) | Digital Public Private Mobile Radio Systems |
| Keyword(2) | cognitive radio |
| Keyword(3) | convolutional code |
| Keyword(4) | π/4 shift QPSK |
| Keyword(5) | timing synchronization |
| 1st Author's Name | Masafumi MORIYAMA |
| 1st Author's Affiliation | AWCC,The University of Electro-communications:PICRC,National Police Academy() |
| 2nd Author's Name | Takeo FUJII |
| 2nd Author's Affiliation | AWCC,The University of Electro-communications |
| Date | 2013-10-25 |
| Paper # | SR2013-74 |
| Volume (vol) | vol.113 |
| Number (no) | 266 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |