2016 Fiscal Year Annual Research Report
LatticeNET: Practical Lattice Codes for Cooperative Wireless Networks
| Project/Area Number |
26289119
|
|---|
| Research Institution | Japan Advanced Institute of Science and Technology |
|---|
Principal Investigator |
KURKOSKI Brian 北陸先端科学技術大学院大学, 先端科学技術研究科, 准教授 (80444123)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
和田山 正 名古屋工業大学, 工学(系)研究科(研究院), 教授 (20275374)
松本 正 北陸先端科学技術大学院大学, 先端科学技術研究科, 教授 (40452114)
八木 秀樹 電気通信大学, 情報理工学(系)研究科, 准教授 (60409737)
|
|---|
| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Keywords | 情報理論 / 符号理論 / 格子 / ネットワーク符号 / 無線通信 |
|---|
| Outline of Annual Research Achievements |
In 2016, the LatticeNet Project achieved the following results, which are divided into 4 work packages (WP).
WP1. For decoding low-density lattice codes, we gave a new decoding algorithm which has the best-known performance-complexity tradeoff for such lattices of dimension 1000 and smaller; these results were published as a journal paper.
WP2. We obtained several new results for the design of power-efficient lattice codes. (a) We provided necessary and sufficient conditions to select a lattice as a shaping lattice, even if that lattice differs from the coding lattice. (b) Barnes-Wall and E8 lattices can be used to shape low-density lattice codes. (c) convolutional code lattices can be used to shape low-density lattice codes. These results are, or will be, published as journal papers.
WP3. For the relay channel, codes for data storage (write-once memory code) are effective when applied to wireless channels. For the parallel relay channel, a new mechanism increases the efficiency when applying hybrid-ARQ to the lossy-forwarding method. Both of these results were published as journal papers.
WP4. We applied lattice codes to the multiple-access relay channel, a type of Gaussian network, using compute-and-forward techniques. We showed that naive application of lattice codes results in poor performance, and solved this problem by allowing the relays to flexibly select linear equations. This work demonstrates the feasibility of nonorthogonal signaling in future wireless communications systems. (WP5 was completed in 2015.)
|
| Research Progress Status |
28年度が最終年度であるため、記入しない。
|
| Strategy for Future Research Activity |
28年度が最終年度であるため、記入しない。
|
| Causes of Carryover |
28年度が最終年度であるため、記入しない。
|
| Expenditure Plan for Carryover Budget |
28年度が最終年度であるため、記入しない。
|
