公开(公告)号：US20060193294A1

公开(公告)日：2006-08-31

申请号：US10535209

申请日：2003-11-10

申请人： Eduard Jorswieck ,  Eduard Jorswieck ,  Volker Jungnickel ,  Clemens Helmolt

发明人： Eduard Jorswieck ,  Eduard Jorswieck ,  Volker Jungnickel ,  Clemens Helmolt

IPC分类号： H04Q7/00

CPC分类号： H04L1/0001 ,  H04L1/0618 ,  H04W52/26 ,  H04W52/343 ,  H04W52/346 ,  H04W52/42

摘要： A bidirectional signal processing method uses parallel transmission of digital transmitted data streams in a multiple input-multiple output system. Related art methods generate high bit error rates mostly in singular transmission channels. For this reason, the rank-adaptive signal processing method provides that the number nd of active subchannels are varied according to the actual channel behavior in order to effect a robust data transmission even in singular radio channels based on a transmit-side and receive-side channel knowledge and a modification of the data vector by a linear matrix vector multiplication while introducing a factor gamma for limiting the maximum transmit power. The maximum transmit power is then only distributed to the currently activated subchannels so that no transmit power remains unused. Another optimization of the number of subchannels nd occurs when selecting the modulation and encoding methods. During the optimal rank-adaptation according to the water-filling principle, another power is allocated to each subchannel. Another modulation and encoding method is accordingly selected for each data stream. During the suboptimal rank-adaptation according to the channel inversion principle, all subchannels have the same power whereby enabling the data streams to be modulated and encoded in a common source

摘要翻译： 双向信号处理方法在多输入多输出系统中使用数字传输数据流的并行传输。 相关技术方法主要在单个传输信道中产生高误码率。 因此，等级自适应信号处理方法提供了根据实际信道行为来改变活动子信道的数目n N，以便即使在基于单个无线电信道的基础上实现鲁棒的数据传输 通过线性矩阵向量乘法同时引入用于限制最大发送功率的因子伽马的数据向量的发送侧和接收侧信道知识和修改。 然后，最大发射功率仅分配给当前激活的子信道，使得不发送发射功率。 当选择调制和编码方法时，发生子信道数目N N的另一优化。 在根据充水原理进行的最优排序调整期间，将另一功率分配给每个子通道。 因此，为每个数据流选择另一种调制和编码方法。 在根据信道反演原理的次最优秩调适期间，所有子信道具有相同的功率，从而使数据流能够被调制和编码在公共源

公开(公告)号：US20060209978A1

公开(公告)日：2006-09-21

申请号：US10471938

申请日：2003-03-15

申请人： Volker Jungnickel ,  Udo Krueger ,  Volker Pohl ,  Clemens Helmolt ,  Thomas Haustein

发明人： Volker Jungnickel ,  Udo Krueger ,  Volker Pohl ,  Clemens Helmolt ,  Thomas Haustein

IPC分类号： H04L1/02

CPC分类号： H04B7/0842 ,  H04B7/0413 ,  H04B7/0669 ,  H04L1/0618

摘要： A radio transmission method and a wireless transmission system comprising multiple transmitter and receiver antennae simultaneously operating within the same frequency range and space-time encoders and decoders. Data transmission and channel matrix measurement can take place synchronously. Characteristic pilot signals that are unequivocally recognizable are superimposed with low noise on the data subsignals in the transmitter and are used in the receiver for the analog measurement of the channel matrix in a weighting unit and for the analog recovery of the transmitted data subsignals from the received signals. The measured analog values are digitally processed in a signal processor. The weightings thus determined are then summed in an analog signal processing unit.

摘要翻译： 一种无线电传输方法和一种无线传输系统，包括同时在相同频率范围内工作的多个发射机和接收天线，以及时空编码器和解码器。 数据传输和信道矩阵测量可以同步进行。 明确识别的特征导频信号在发射机中的数据子信号上叠加低噪声，并在接收机中用于加权单元中的信道矩阵的模拟测量，并且用于从接收到的数据子信号的模拟恢复 信号。 测量的模拟值在信号处理器中进行数字处理。 这样确定的加权然后在模拟信号处理单元中相加。