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In the near future some of mobile communication prime objectives need to be improved, including increased capacity, higher data rate, low latency, and better quality of service. To respond to these growing demands, a modification should be done at the physical layer in terms of waveforms adopted. Flexible waveforms have been proposed to meet the challenges faced in current generation systems such...
With the unceasing increase of the mobile data traffic, network operators are forced to improve the performance of their networks. The traffic explosion is intensified by the recent deployment of Long Term Evolution (LTE) networks. However, operators cannot opt for deploying more cells, as this will increase their financial investments. Operators are seeking for mobile technologies with higher spectral...
Electricity grid is one of the most critical national infrastructures. Therefore, governments around the world make the smart grid as one their priorities, in order to guarantee a safe, reliable and environment friendly energy. The smart grid can only be built on a two-way communication infrastructure, which in its turn must be safe, reliable and green as well. Wireless communications build an attractive...
5G are being intensively studied in order to deliver systems by 2020. This paper presents technological challenges and perspectives beyond 4G systems. It addresses the research landscape of 5G systems and the requirements to be fullfilled. It also presents some key technologies driving 5G development in order to give form to the future generation mobile systems.
Non-binary LDPC codes are promising error correcting techniques with very good performance, especially for high order fields. Using higher order fields enhances performance but, at the same time, increases decoding complexity. Several methods have been proposed to reduce this complexity, such as sub-optimal decoding algorithms or techniques aiming at reducing the number of iterations. In this paper,...
Non-binary LDPC codes are promising error correcting codes for short and moderate block lengths. These codes demonstrate interesting performances in high order fields, though are more complex to decode. As for binary LDPC codes, decoding scheduling can be optimized to improve performance. In this paper, a simulation-based approach is used for different scheduling policies in the non-binary case in...
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