Abstract
Under a benchmark of bit error rate (BER) in data transmission, a just perfect trade-off between maximizing code rate (CR) and reliable communication presents a significant coordinated challenge in the time-varying additive white Gaussian noise (T-AWGN) channel. In this paper, based on the guidance of a tight bound as coding parameters of polar code rate \( R \), block length \( N \) with the capacity \( I(W) \) in channel \( W \) of \( N \ge \beta /(I(W) - R)^{\mu } \), a criteria of effectively adjusting the size of the parameter \( \mu \) will achieve a better trade-off between the CR and the reliability, where \( \beta \) depends only on block error probability. In the circumstance of a round-clock traffic light (RTL) simulation, numerical results show that this scheme has a good preference for the guaranteed reliability for the wireless communication.
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Notes
- 1.
T-AWGN channel model: \( y_{i} = x_{i} + n_{i} (t) \),here \( x_{i} \) is input, \( y_{i} \) is output, and \( n_{i} (t):N(0,\delta^{2} (t)) \) is a zero mean Gaussian noise and \( \delta^{2} (t) \) is a varying variance with \( t \).
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© 2019 ICST Institute for Computer Sciences, Social Informatics and Telecommunications Engineering
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Jin, H., Jiang, B. (2019). An Adaptive Code Rate Control of Polar Codes in Time-Varying Gaussian Channel. In: Liu, X., Cheng, D., Jinfeng, L. (eds) Communications and Networking. ChinaCom 2018. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, vol 262. Springer, Cham. https://doi.org/10.1007/978-3-030-06161-6_14
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DOI: https://doi.org/10.1007/978-3-030-06161-6_14
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