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5 papers · 2 filters
On an Achievable Rate of Large Rayleigh Block-Fading MIMO Channels with No CSI
Keigo Takeuchi, Ralf R. Mueller, Mikko Vehkaperae +1
Training-based transmission over Rayleigh block-fading multiple-input multiple-output (MIMO) channels is investigated. As a training method a combination of a pilot-assisted scheme…
Quantization of Binary-Input Discrete Memoryless Channels
Brian M. Kurkoski, Hideki Yagi
The quantization of the output of a binary-input discrete memoryless channel to a smaller number of levels is considered. An algorithm which finds an optimal quantizer, in the sens…
Improved Rate-Equivocation Regions for Secure Cooperative Communication
Ninoslav Marina, Hideki Yagi, H. Vincent Poor
A simple four node network in which cooperation improves the information-theoretic secrecy is studied. The channel consists of two senders, a receiver, and an eavesdropper. One or…
Improvement of BP-Based CDMA Multiuser Detection by Spatial Coupling
Keigo Takeuchi, Toshiyuki Tanaka, Tsutomu Kawabata
Kudekar et al. proved that the belief-propagation (BP) threshold for low-density parity-check codes can be boosted up to the maximum-a-posteriori (MAP) threshold by spatial couplin…
A Phenomenological Study on Threshold Improvement via Spatial Coupling
Keigo Takeuchi, Toshiyuki Tanaka, Tsutomu Kawabata
Kudekar et al. proved an interesting result in low-density parity-check (LDPC) convolutional codes: The belief-propagation (BP) threshold is boosted to the maximum-a-posteriori (MA…