Spinal codes are a new class of rateless codes that can achieve the channel capacity over time-varying channel condition. Pseudo random hash function is the core of spinal codes, which is executed to generate spines i...
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ISBN:
(纸本)9781728107387
Spinal codes are a new class of rateless codes that can achieve the channel capacity over time-varying channel condition. Pseudo random hash function is the core of spinal codes, which is executed to generate spines in every encoding and decoding process. However, due to the complexity of hash function, the decoding of spinal codes is complicated. A method to decrease the computational complexity of spinal codes is proposed in this paper by using chaotic Kent map. Compared with hash function, the chaotic Kent map can significantly decrease the computational complexity of decoding process in bubble decoder. Simulation shows that the performance of Kent map is almost similar to that of hash function, but the complexity of chaotic Kent map is only 25% of that of the bubble decoder when the segment length is 8.
As the feature size of transistors decreases, multiple bit upsets and single event transient effects become severe in circuits working in radiation environment. In static random-access memories (SRAM), both single eve...
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As the feature size of transistors decreases, multiple bit upsets and single event transient effects become severe in circuits working in radiation environment. In static random-access memories (SRAM), both single event upsets and single event transients need caring about. Fault-tolerant ECCs are optional for SRAM protection, which own the ability to deal with SEU and SET at the same time. We designed a series of lowcomplexity burst error correcting codes with fault detection feature. This can deal with burst errors in memories and transient errors in the decoder. lowcomplexity ECC simplifies the decoding circuits and reduces hardware overhead. Compared with schemes to deal with SET in decoders, the proposed scheme has obvious advantage on area's overhead and can be an effective choice for SRAM protection in radiation environment.
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