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    • 5. 发明申请
    • Method and apparatus to balance maximum information rate with quality of service in a MIMO system
    • 在MIMO系统中平衡最大信息速率与服务质量的方法和装置
    • US20060056534A1
    • 2006-03-16
    • US10940060
    • 2004-09-13
    • Dumitru IonescuBalaji Raghothaman
    • Dumitru IonescuBalaji Raghothaman
    • H04L1/02
    • H04L1/006H04B7/0443H04L1/0003H04L1/0009H04L1/0026H04L1/0066H04L1/0068H04L1/0071H04L1/06H04L1/0687
    • Disclosed is a method to operate a wireless MIMO communication system, where the method includes, for N symbols of a frame of information to be transmitted through a plurality of eigen sub-channels, allocating N1, symbols to a stronger eigen sub-channel and N2 symbols to a weaker eigen sub-channel, where N1, >N2; determining a probability of reception error when transmitting the N2 symbols through the weaker eigen sub-channel for an auxiliary signal-to-noise ratio; solving for a quality of service QoS of the weaker eigen sub-channel and if the QoS is less than a desired QoS, decreasing the value of N and repeating allocating symbols, determining the probability of reception error and solving for the QoS. The symbols may be systematic symbols output from a turbo coder, and thus replicate the original source bits. In another aspect this invention provides a method to operate a wireless MIMO communication system that includes asymmetrically allocating spreading codes to a stronger eigen sub-channel and to a weaker eigen sub-channel such that the stronger eigen sub-channel is allocated more spreading codes than the weaker eigen sub-channel; and transmitting all systematic bits of turbo coded information over the stronger eigen sub-channel.
    • 公开了一种操作无线MIMO通信系统的方法,其中该方法包括:通过多个本征子信道发送的信息帧的N个符号,分配N 1个符号到 更强的本征子信道和N 2个符号分配给较弱的特征子信道,其中N 1,N 2,N 2, 当辅助信噪比通过较弱的本征子信道发送N 2个符号时,确定接收错误的概率; 解决较弱本征子信道的服务质量QoS,如果QoS小于期望的QoS,则减小N的值并重复分配符号,确定接收错误的概率并解决QoS。 符号可以是从turbo编码器输出的系统符号,并且因此复制原始源比特。 在另一方面,本发明提供了一种操作无线MIMO通信系统的方法,该无线MIMO通信系统包括将扩展码不对称地分配给更强的本征子信道和较弱的本征子信道,使得更强的本征子信道被分配更多的扩频码 弱特征子信道; 并通过更强的本征子信道发送turbo编码信息的所有系统比特。