| Budget Amount *help |
¥16,120,000 (Direct Cost: ¥12,400,000、Indirect Cost: ¥3,720,000)
Fiscal Year 2016: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2015: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2014: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Outline of Final Research Achievements |
We developed new practical, finite-length lattice coding schemes to improve spectral efficiency of wireless communication systems. We developed a new lattice encoding scheme that possesses three important properties: (1) satisfies the AWGN transit power constraint (high shaping gain) (2) has high error-correction capability (high coding gain) (3) efficient quantization and decoding algorithms (low computational complexity). We developed two new belief-propagation lattice decoding algorithms to improve the performance-complexity tradeoff. Lattice compute-and-forward techniques were applied to two Gaussian networks, showing that lattice coding can improve the spectral efficiency of wireless networks.
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