Huang, Tao, Yuan, Jinhong, Cheng, Xingqing, and Wan, Lei (2015) Design of Degrees of Distribution of LDS-OFDM. In: Proceedings of 9th International Conference on Signal Processing and Communication Systems. From: ICSPCS 2015: 9th International Conference on Signal Processing and Communication Systems, 14 -16 December 2015, Cairns, QLD, Australia.

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Abstract

In this paper, we study the design of low density signature-orthogonal frequency division multiple access (LDS-OFDM). Compare to the conventional OFDMA system, LDS system has some desirable properties that allows system operating at overloaded conditions. LDS-OFDM system has been shown that outperforms the corresponding OFDMA system. In this paper, we focus on the design of the LDS degrees distribution, which has not been addressed in the literature. The goal is to achieve the optimum system load. We propose an iterative optimization procedure by utilizing the EXIT chart. Optimized load has been given in this paper with corresponding LDS spreading parameters. The performance of the designed LDS-OFDM system is evaluated. Monte Carlo based simulations further confirm that the designed LDS-OFDM outperforms the corresponding OFDMA system by up to 10 dB.

Item ID:	93564
Item Type:	Conference Item (Research - E1)
ISBN:	978-1-4673-8118-5
Related URLs:	https://www.icspcs.net
Copyright Information:	© 2015 IEEE.
Date Deposited:	18 Aug 2026 06:40
FoR Codes:	40 ENGINEERING > 4099 Other engineering > 409902 Engineering instrumentation @ 100%
SEO Codes:	28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering @ 100%
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