公开(公告)号：US20080186842A1

公开(公告)日：2008-08-07

申请号：US12019547

申请日：2008-01-24

申请人： Chia-Chin Chong ,  Pedro C. Pinto ,  Moe Z. Win ,  Fujio Watanabe ,  Hiroshi Inamura

发明人： Chia-Chin Chong ,  Pedro C. Pinto ,  Moe Z. Win ,  Fujio Watanabe ,  Hiroshi Inamura

IPC分类号： H04J9/00

CPC分类号： H04W16/14

摘要： A wireless communication system and a detect-and-multiplex (DAM) spectrum sharing technique eliminate contention by secondary spectrum users by multiplexing multiple access methods. Suitable multiple access methods include time division multiple access (TDMA), frequency division multiple access (FDMA), code division multiple access (CDMA), space division multiple access (SDMA), orthogonal frequency division multiple access (OFDMA), spectral nulling (SN) or a hybrid scheme (HS) based on a combination of two or more of the above techniques. Unlike, detect-and-avoid (DAA) multiple access methods, the DAM method increases spectrum usage efficiency, and allows more users to share the same region of the spectrum.

摘要翻译： 无线通信系统和检测与复用（DAM）频谱共享技术通过复用多种接入方式消除了二级频谱用户的争用。 合适的多址方法包括时分多址（TDMA），频分多址（FDMA），码分多址（CDMA），空分多址（SDMA），正交频分多址（OFDMA），频谱归零 ）或基于两种或更多种上述技术的组合的混合方案（HS）。 与DAA方法不同的是，DAM方法提高了频谱使用效率，并且允许更多用户共享频谱的相同区域。

公开(公告)号：US20080188253A1

公开(公告)日：2008-08-07

申请号：US12019562

申请日：2008-01-24

申请人： Chia-Chin Chong ,  Pedro C. Pinto ,  Moe Z. Win ,  Fujio Watanabe ,  Hiroshi Inamura

发明人： Chia-Chin Chong ,  Pedro C. Pinto ,  Moe Z. Win ,  Fujio Watanabe ,  Hiroshi Inamura

IPC分类号： H04B15/00 ,  H04B7/00

CPC分类号： H04W16/22

摘要： A wireless communication system experience interference from other wireless communication networks. A method for designing wireless communication systems subject to interference is proposed based on a realistic interference model which accounts for the propagation effects introduced by the wireless environment (such as path loss, shadowing, and multipath fading), and for the spatial scattering of transmitters (using a Poisson field). The method accounts for tradeoffs between network parameters, such as signal-to-noise ratio (SNR), interference-to-noise ratio (INR), path loss exponent, spatial density of the interferers, and error probability. Advantages of this method include: 1) a unified framework for designing a wireless system, subject to cumulative interference and noise, incorporating a wide range of performance metrics; and 2) a general application that covers a broad class of wireless communication systems and channel fading distributions.

摘要翻译： 无线通信系统经受来自其他无线通信网络的干扰。 提出了一种用于设计受干扰的无线通信系统的方法，该实际干扰模型考虑了由无线环境引入的传播效应（如路径损耗，阴影和多径衰落）以及发射机的空间散射（ 使用泊松场）。 该方法考虑了网络参数之间的折衷，如信噪比（SNR），干扰信噪比（INR），路径损耗指数，干扰源的空间密度和误差概率。 该方法的优点包括：1）设计无线系统的统一框架，受到累积干扰和噪声的影响，并结合广泛的性能指标; 和2）涵盖广泛类别的无线通信系统和信道衰落分布的通用应用。