Many wireless communications channels consist of multiple signal paths from the transmitter to receiver. This multiplicity of paths leads to a phenomenon known as multipath fading. The multiple paths are caused by the presence of objects in the physical environment that, through the mechanisms of propagation, alter the path of radiated energy. These objects are referred to as scatterers. In the past, researchers often looked at ways to mitigate multipath scattering, such as in diversity systems. Multiple-input, multiple-output (MIMO) systems, on the other hand, use multipath diversity to their advantage; a MIMO system has the ability to translate increased spatial diversity into increased channel capacity.
標簽： Multiple-Output Multiple-Input Channel Models
上傳時間： 2020-05-31
上傳用戶：shancjb
The investigation of the propagation channel is becoming more and more important in mod- ern wireless communication. The demand for spectral efficiency motivates exploitation of all channels that can possibly be used for communications. Nowadays, a common trend for designing physical layer algorithms is to adapt the transceiving strategy, either by maximizing the diversity gains or by utilizing the coherence of the channels to improve the signal-to-noise power ratio.
標簽： Characterization Propagation Channel
上傳時間： 2020-05-31
上傳用戶：shancjb
The CS4245 is a highly integrated stereo audio CO-DEC.
上傳時間： 2013-06-17
上傳用戶：xjz632
A dimming driver designed to drive an external n-channel MOSFET in series with the LED string pro
上傳時間： 2013-07-06
上傳用戶：1583060504
HT45F43 特性特性特性特性 MCU 特性：內建 2x OPAs & 2x Comparators, EEPROM, HIRC 4MHz + 32K LIRC，節省外部器件 傳感器：電化學 Sensor（ME2-CO） 電源電壓：9V 堿性電池 高音量蜂鳴器輸出：（＞85DB） 待機電流：Typ.21uA, Max.27uA 低電壓檢測：7.5V 自測 / 校準功能 LED 顯示：紅、黃、綠三顆 LED 指示 使用 HT45F43 內建 OSC & Reset 電路，節省外部器件 使用 HT45F43 內建 OPA 進行 CO Sensor 信號放大，節 省外部器件 WATCHDOG 每 32 秒喚醒一次進行 CO 濃度偵測和電池電壓偵測
上傳時間： 2013-06-16
上傳用戶：qunquan
·Stanford&IBM牛人經典之作 - Digital Control of Dynamic SystemsEditorial ReviewsProduct DescriptionThis well-respected, market-leading text discusses the use of digital computers in the real-time co
標簽： nbsp Hardcover Digital Control
上傳時間： 2013-07-31
上傳用戶：cuiyashuo
·[ARRL.無線電通訊手冊].The.Arrl.Handbook.For.Radio.Communications.-.2005Introduction to the CD-ROM EditionThe ARRL Handbook For Radio CommunicationsThis Version 9.0 of the ARRL Handbook CD-ROM contains the co
標簽： Communications Handbook Radio ARRL
上傳時間： 2013-04-24
上傳用戶：SimonQQ
The MAX5713/MAX5714/MAX5715 4-channel, low-power,8-/10-/12-bit, voltage-output digital-to-analog converters(DACs) include output buffers and an internal referencethat is selectable to be 2.048V, 2.500V, or 4.096V. TheMAX5713/MAX5714/MAX5715 accept a wide supplyvoltage range of 2.7V to 5.5V with extremely low power(3mW) consumption to accommodate most low-voltageapplications. A precision external reference input allowsrail-to-rail operation and presents a 100kI (typ) load toan external reference.
上傳時間： 2013-12-23
上傳用戶：ArmKing88
The MAX4968/MAX4968A are 16-channel, high-linearity,high-voltage, bidirectional SPST analog switches with18I (typ) on-resistance. The devices are ideal for use inapplications requiring high-voltage switching controlledby a low-voltage control signal, such as ultrasound imagingand printers. The MAX4968A provides integrated40kI (typ) bleed resistors on each switch terminal todischarge capacitive loads. Using HVCMOS technology,these switches combine high-voltage bilateral MOSswitches and low-power CMOS logic to provide efficientcontrol of high-voltage analog signals.
上傳時間： 2013-10-09
上傳用戶：yepeng139
Digital-to-analog converters (DACs) are prevalent inindustrial control and automated test applications.General-purpose automated test equipment often requiresmany channels of precisely controlled voltagesthat span several voltage ranges. The LTC2704 is ahighly integrated 16-bit, 4-channel DAC for high-endapplications. It has a wide range of features designed toincrease performance and simplify design.
上傳時間： 2013-11-22
上傳用戶：元宵漢堡包
