Study of complexity and performance trade-offs in wireless communication systems

我们的研究计划集中在实现复杂性和性能之间的权衡，以优化无线通信的总体吞吐量。我们有两个应用，即移动个人通信和无线传感器网络。在本提案中，我们将结合各种调制的最佳和次最佳解码器来研究turbo和低密度奇偶校验码。我们将使用双管齐下的方法来评估或估计给定特定通信场景的最佳编码-解码-调制组合。最直接的方法是使用计算机模拟进行性能研究。该约束将是给定特定通道条件所需的总体复杂性。性能指标将是误码率（BER）。一旦我们选择了合适的方案，在我们的建议的第一部分中使用的程序将被移植到硬件中，但要注意使实现模块化和可扩展。我们的第二种方法是半分析方法。我们将从编码-解码-调制组合的误码率性能数据样本开始。然后，我们将仔细选择中间的情况，以便得到一个好的样本。第二步是找到一种方法，使用我们拥有的样本来插值性能，以便为给定的通信场景找到最佳的编码-解码-调制组合。该项目将为加拿大工业界提供有用的成果，帮助加拿大成为定义未来无线系统的主要参与者。个人无线通信系统正变得越来越普遍，培训hqp在这方面非常重要。然而，仍有几个技术问题有待解决，但我们相信，这一建议是解决一些重要问题的重要一步。无线传感器网络也是如此，在地下矿井的情况下，无线传感器网络可用于人员/材料定位、探测危险情况和通信。

Our research proposal focuses on the trade-offs between implementation complexity and performance in order to optimize overall throughput in wireless communications. We have two applications in mind, namely mobile personal communications and wireless sensor networks. In this proposal, we will look at turbo and low-density parity check codes in combination with optimal and sub-optimal decoders for various modulations. We will use a two-prong approach to evaluate or estimate the best code-decoder-modulation combination given a certain communication scenario. The most straightforward approach is to proceed with a performance study using computer simulations. The constraint will be overall complexity required given a certain channel condition. The performance measure will be bit error rate (BER). Once we have selected the proper schemes, the programs used in the first part of our proposal will be ported in hardware, but care will be taken to make the implementation modular and scalable. Our second approach is a semi-analytical one. We will start with a sample of BER performance data for code-decoder-modulation combinations. We will then choose carefully the cases in between in order to have a good sample. The second step will be to find a way to interpolate performance using the samples that we have in order to find the best code-decoder-modulation combination for a given communications scenario. This project will provide useful results that can be transferred to Canadian industry, helping Canada to be a major player in defining future wireless systems. Personal wireless communication systems are becoming prevalent and it is very important to train HQPs in this area. However, several technological problems still remain to be solved but we believe that this proposal is a major step in solving some of the important ones. The same can be said about wireless sensor networks which, in the context of an underground mine, can be used for personnel/material location, detection of dangerous situations and communications.