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Scrambling is a way of enhancing physical layer security presented in many papers. However, few of these papers have mentioned the scrambling effect on the polar coding secrecy. In this letter, we introduce a new scrambling module combined with a polar coding system, in which pre-assigned key is unnecessary. The presented scrambling module combines linear and nonlinear structure. The presented linear...
In this paper, a rate allocation policy is proposed for truncated transmission of spinal codes based on imperfect feedback over block fading channels. By constructing and solving the throughput optimization problem, the optimized rate allocation policy is obtained under the constraint of limited transmission attempts and frame error probability. Both analysis and simulations show that the rate-allocated...
This paper proposes a rate adaptation strategy based on Spinal codes, a novel rateless codes, in truncated incremental redundancy hybrid ARQ (HARQ) transmission. The information transmission between Satellite or deep space probes and ground receivers is considered. Too many retransmissions, which are caused by error frame, and long distance lead to considerable delay, up to several seconds. The delay...
For designing optimized beamforming and zero forcing matrices for interference alignment, the usual way is to minimize the leakage interference. From the feasibility conditions of interference alignment, we have established equivalent conditions involving ranks of the interference and desired signal matrices and have proposed optimization of beamforming and zero-forcing matrices using ranks. Since...
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