Multiple coding and decoding of quadrature amplitude modulation using weight distribution
| Project/Area Number |
26420376
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Communication/Network engineering
|
|---|
| Research Institution | Aichi Institute of Technology |
|---|
Principal Investigator |
|
|---|
| Research Collaborator |
MIWA Tetsuya
SUZUKI Takato
|
|---|
| Project Period (FY) |
2014-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
|
|---|
| Keywords | 無線通信システム / MIMO / QAM / 符号化変調 / 畳み込み符号 / 時空間符号 / 整数型符号 / トレリス符号 / 時空間ブロック符号 / 時空間トレリス符号 / 誤り訂正符号 / 重み分布 |
|---|
| Outline of Final Research Achievements |
Quadrature Amplitude Modulation (QAM) is applied to many digital communications, because it provides high speed transmission. Firstly, a matched mapping technique for QAM has been proposed. The technique allows to be represented the distances between all pairwise signal points in QAM by the distances between the origin and the other points. The technique offers an easy search for good codes. Thus, new non-binary convolutional codes with the largest minimum free distance have been searched for QAM. The performance of the new codes has been evaluated theoretically and compared with a conventional TCM. The results show the proposed codes are effective. In addition, integer space-time block codes for QAM have been presented. They have been searched for using the determinant and trace design criteria calculated by the matched mapping. The codes have been compared with Golden code and Alamouti code. The results show the proposed codes are effective for high spectral efficiencies.
|
Report
(5 results)
Research Products
(22 results)
