公开(公告)号：US20070025467A1

公开(公告)日：2007-02-01

申请号：US11459757

申请日：2006-07-25

申请人： Yingxue Li

发明人： Yingxue Li

IPC分类号： H04L27/00

CPC分类号： H04L1/0618 ,  H04L25/03184 ,  H04L25/03292

摘要： A wireless communications device includes an encoder having an input for receiving an input symbol, and generates based upon the input symbol a channel symbol and an antenna control symbol. At least one transmitter is coupled to the encoder for receiving the channel symbol. An antenna switch is coupled to the encoder for receiving the antenna control symbol, and to the at least one transmitter for receiving the channel symbol to be transmitted. An antenna array is coupled to the antenna switch and includes N antenna elements, with N≧2. The antenna switch selects less than N antenna elements based upon the antenna control symbol for transmitting the channel symbol.

摘要翻译： 无线通信设备包括具有用于接收输入符号的输入的编码器，并且基于输入符号生成信道符号和天线控制符号。 至少一个发射机耦合到编码器以接收信道符号。 天线开关耦合到编码器，用于接收天线控制符号，并耦合到至少一个发射机，用于接收待传输的信道符号。 天线阵列耦合到天线开关，并且包括N个= 2的N个天线元件。 天线开关基于用于发送信道符号的天线控制符号来选择少于N个天线元件。

公开(公告)号：US20060209667A1

公开(公告)日：2006-09-21

申请号：US11358618

申请日：2006-02-21

申请人： Yingxue Li

发明人： Yingxue Li

IPC分类号： H04J11/00

CPC分类号： H04B7/02 ,  H04L1/0618 ,  H04L5/0025 ,  H04L5/0046 ,  H04L27/2626 ,  H04L27/2647

摘要： A transmitter in an OFDM-MIMO wireless communication system uses multiple antennas to transmit each data stream. Before the coded binary bits are mapped into channel symbols, they are divided into two groups. One group is mapped to a channel symbol as in a conventional system. Another group of binary bits is used to generate a spatial mapping index. The spatial mapping index determines which antenna is to be used to transmit the channel symbol for each subcarrier. Effectively, information bits are jointly represented by a combination of a channel symbol and an antenna that transmits the channel symbol. Therefore, to achieve the same data rate, a smaller signal constellation is required. In addition, spatial diversity can be achieved which is similar to traditional switching diversity. The number of non-zero subcarriers is reduced by half on average, which results in a lower peak to average ratio than conventional OFDM systems.

摘要翻译： OFDM-MIMO无线通信系统中的发射机使用多个天线来传送每个数据流。 在将编码的二进制位映射到通道符号之前，将它们分成两组。 一个组被映射到一个通道符号，就像传统的系统一样。 另一组二进制位用于生成空间映射索引。 空间映射索引确定哪个天线将用于发送每个子载波的信道符号。 实际上，信息位由发送信道符号的信道符号和天线的组合共同表示。 因此，为了达到相同的数据速率，需要较小的信号星座。 此外，可以实现类似于传统交换分集的空间分集。 非零子载波的数量平均减少一半，这导致比传统OFDM系统更低的峰均比。

公开(公告)号：US20050130597A1

公开(公告)日：2005-06-16

申请号：US10737012

申请日：2003-12-16

申请人： Yingxue Li ,  William Reinisch ,  Haim Harel

发明人： Yingxue Li ,  William Reinisch ,  Haim Harel

IPC分类号： H04B7/005 ,  H04B7/06 ,  H04B7/08 ,  H04B17/00 ,  H03C1/62 ,  H03C7/02 ,  H04B1/02 ,  H04B7/02

CPC分类号： H04W52/26 ,  H04B7/0613 ,  H04B7/0857 ,  H04B17/309 ,  H04W52/143 ,  H04W52/146 ,  H04W52/241 ,  H04W52/247 ,  H04W52/34

摘要： Adjusting a signal includes receiving signals and quality indicators at an adjuster. The quality indicators include as least one of a power control group boundary signal, a power control group index, a PN code per active finger, a reverse power control bit per active finger, an energy per chip over noise power spectral density ratio per active finger, channel estimates I/Q per active finger, an energy per bit over noise power spectral density, a transmit AGC signal, a total receive power, and any combination of the preceding. A signal adjustment is calculated according to the quality indicators, and the signals are adjusted according to the signal adjustment to yield adjusted signals.

摘要翻译： 调整信号包括调节器处的接收信号和质量指示器。 质量指标包括功率控制组边界信号，功率控制组索引，每个活动手指的PN码，每个活动手指的反向功率控制位，每个有效手指的每芯片超过噪声功率谱密度比的能量中的至少一个 ，每个活动手指的信道估计I / Q，每比特超过噪声功率谱密度的能量，发射AGC信号，总接收功率以及前述的任何组合。 根据质量指标计算信号调整，根据信号调整信号进行调整，以产生调整后的信号。