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1.发明公开Channel tracking using decision directed estimation in pilot-assisted wireless multi-carrier systems 审中-公开Kanalnachführungmittels entscheidungsgesteuerterSchätzungbei drahtlosenMehrträgersystemenmit Pilotsignalen
公开(公告)号：EP1389861A1
公开(公告)日：2004-02-18
申请号：EP02018018.8
申请日：2002-08-12
发明人： Bolinth, Edgar , Grünheid, Rainer, Dr. , Kern, Ralf , Niemeyer, Ulf , Ran, Jianjun , Rohling, Hermann, Prof.
CPC分类号： H04L25/03114 , H04L25/0307 , H04L27/2601 , H04L2025/03611
摘要： Method, transmitter and receiver for supporting communication over a communication channel, combining pilot and decision directed estimation information. The number of pilots can thus be reduced below the threshold established by the sampling theorem, since the decision directed estimation tracks the evolution of the parameters estimated.
摘要翻译： 方法，发射机和接收机，用于支持通过通信信道的通信，组合导频和决策指导的估计信息。 因此导频的数量可以被降低到由采样定理建立的阈值以下，因为决策指导估计跟踪估计的参数的演变。
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2.发明公开Method for an adaptive bitloading in an OFDM communication system 审中-公开在ein OFDM公共系统中的自适应Bitverteilung的Verfahren
公开(公告)号：EP1187413A1
公开(公告)日：2002-03-13
申请号：EP00119856.3
申请日：2000-09-12
IPC分类号： H04L27/26
CPC分类号： H04L5/006 , H04L5/0007 , H04L5/0046 , H04L5/0094
摘要： In the IST project BRAIN (Broadband Radio Access for IP based Networks), different enhancements for the HIPERLAN/2 air interface are studied with the goal to guarantee a certain Quality of Service (QoS) and to increase the bandwidth efficiency of the considered broadband system. In this paper, aspects of adaptive modulation are analysed in detail and a new loading algorithm is introduced which shows a slightly better performance and lower computational complexity compared to the well-known technique described in [1]. Furthermore, the loading algorithm is used in combination with a blockwise allocation of modulation levels to the subcarriers. This approach can result in a smaller signalling overhead in comparison with a subcarrier-specific modulation.
摘要翻译： 在IST项目BRAIN（基于IP的网络的宽带无线接入）中，研究了HIPERLAN / 2空中接口的不同增强功能，目的是保证一定的服务质量（QoS），并提高考虑的宽带系统的带宽效率 。 在本文中，详细分析了自适应调制的方面，并介绍了一种新的加载算法，与Ä1Ü中描述的众所周知的技术相比，显示出更好的性能和更低的计算复杂度。 此外，加载算法与对子载波的调制级别的块分配结合使用。 与子载波特定调制相比，该方法可以导致较小的信令开销。
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