公开(公告)号：US06219341B1

公开(公告)日：2001-04-17

申请号：US09040783

申请日：1998-03-18

申请人： Mahesh K. Varanasi

发明人： Mahesh K. Varanasi

IPC分类号： H04J316

CPC分类号： H04J13/004 ,  H04B1/707 ,  H04J3/1682 ,  H04J13/18

摘要： A method for wireless communication utilizes available channel bandwidth when multiplexing a plurality of user signals over a communication channel. The method utilizes signal power characteristics as a signature to multiplex and de-multiplex the plurality of signals applied to the communication channel. Many wireless communication applications are required to utilize a limited, assigned frequency range. Modulation of digital information in such a limited bandwidth is a critical factor in determining the data transferred through the wireless communication channel. The present invention provides for multiplexing of a plurality of digital data sequences over a wireless communication channel having a fixed frequency range. The method provides for a base station which dynamically assigns signaling power parameters to each remote device which is optimally bandwidth-efficient for present signal traffic loads and for present received power conditions. Depending upon a number of factors, the method improves channel bandwidth utilization by factors of two to three over presently known methods. The communication method may be applied to many communication applications wherein a plurality of diverse user signals are multiplexed onto a single communication channel. Exemplary of such applications are wireless voice communication, e.g. digital cellular telephony and wireless data communications, e.g. wireless computer networking.

摘要翻译： 无线通信的方法在通过通信信道复用多个用户信号时利用可用信道带宽。 该方法利用信号功率特性作为签名，对应用于通信信道的多个信号进行复用和解复用。 需要许多无线通信应用来利用有限的分配的频率范围。 在有限带宽内调制数字信息是确定通过无线通信信道传输的数据的关键因素。 本发明提供了一种具有固定频率范围的无线通信信道上的多个数字数据序列的多路复用。 该方法提供了一种基站，其向每个远程设备动态地分配信令功率参数，对于当前信号业务负载和当前的接收功率条件，该基站是最佳带宽有效的。 根据许多因素，该方法通过目前已知方法的两到三个因素来改善信道带宽利用率。 通信方法可以应用于许多通信应用，其中多个不同用户信号被复用到单个通信信道上。 这样的应用的示例是无线语音通信，例如。 数字蜂窝电话和无线数据通信，例如。 无线计算机网络。

公开(公告)号：US20080212714A1

公开(公告)日：2008-09-04

申请号：US11893636

申请日：2007-08-17

申请人： Mahesh K. Varanasi ,  Yi Jiang

发明人： Mahesh K. Varanasi ,  Yi Jiang

IPC分类号： H04L27/00

CPC分类号： H04L25/03343 ,  H04B7/0417 ,  H04B7/0632 ,  H04B7/066 ,  H04B7/0669 ,  H04L1/0002 ,  H04L1/0016 ,  H04L1/0656 ,  H04L1/0675 ,  H04L1/1812 ,  H04L2025/03426

摘要： A spatial multiplexing architecture is described for a MIMO communications system wherein the receiver feeds a number of bits of channel state information back to the transmitter. The architecture includes jointly designed ordered detection at the receiver and rate/power allocation at the transmitter. The receiver feeds back a finite number of bits to the transmitter regarding the detection order. The transmitter utilizes this detection order information to assign rates and powers. A Greedy ordering Rate Tailored (GRT-SMA) scheme is described which includes independent coding/decoding on each layer.

摘要翻译： 描述了MIMO通信系统的空间复用架构，其中接收机将多个信道状态信息的比特馈送给发射机。 该架构包括在接收机处共同设计的有序检测和发射机的速率/功率分配。 接收机将有限数量的比特反馈给发射机关于检测顺序。 发射机利用该检测顺序信息分配速率和功率。 描述了一种贪婪定制速率（GRT-SMA）方案，其包括在每个层上的独立编码/解码。