2023年5月21日 · OOB就是Out of Band的缩写，指安全数据不经过自己通信的 信道 进行传输。 OOB允许两个蓝牙设备通过设备的带外通道发送认证信息，比如：串口、NFC、UWB等。 OOB的目的是允许两个设备在没有输入输出能力的情况下创建认证配对，认证需要发送3个认证参数： device address 、 random number 、 confirm value。 它这种认证配对方式能很好的反MITM攻击。 方法就是在主机或者从机中产生一个密钥，然后OOB数据通过蓝牙通信之外的方式发送给 …

It incorporates a $4^{\text{th}}$-order gain-boosted N-path low-noise amplifier (LNA) and a $2^{\text{nd}}$-order baseband (BB) TIA to widen the −3dB RF-BW and also enhance the out-of-band (OOB) roll-off slope. Furthermore, a positive-feedback loop is created for the input-impedance matching purpose thanks to the impedance-translation ...

This letter proposes an ultralow-power mixer-first front-end using voltage-mode boosting. The voltage gain is achieved passively by using capacitive stacking. By employing N-path filtering technique, this front-end achieves high out-of-band (OOB) rejection which results in …

2019年12月27日 · This article explains the concept of implicit capacitive stacking and analyzes its transfer characteristics. A prototype chip, fabricated in 22-nm fully depleted silicon on insulator (FDSOI) technology, achieves a voltage gain of 13 dB and OOB IIP3/IIP2 of +25/+ 66 dBm with 5-dB noise figure while consuming only 600 μW of power at f LO = 1 GHz ...

2024年2月1日 · This paper presented a versatile broadband RFFE designed for DSRs operating in 5G FR-1. It incorporates a reconfigurable fourth-order Q-enhanced filter and a multi-mode noise-cancelling balun-LNA. The RFFE provides a wide range of gain adjustability and offers steep OOB suppression, resulting in 3.9 dB NF and 23 dBm OOB IIP3.

2021年8月9日 · 针对上述的问题，建议通过out-of-bag(OOB)方法，在剩下数据上做验证，结合Permutation计算特征重要性。 此外，GBDT也是基于 不纯度 计算的特征重要性，不过其在单棵树上，是回归树，所以不是基于gini系数，而是MSE或MAE。

2016年8月6日 · Besides the improved low-frequency quantization noise suppression and/or increased bandwidth, a negative implication of a higher OOB gain is that the maximum stable input level of the modulator is lower. The impact of a smaller maximum input signal level is that the modulator will become more sensitive to other noise sources like circuit noise.

2016年8月6日 · STF OOB gain is typically seen in CT ΣΔ ADCs with efficient loop-filter architectures. It provides gain to (poorly-filtered) dominant blockers near the edge of band; thereby reducing the available ADC dynamic range for signal in-band.

2016年11月4日 · Co-existing wireless systems, which share a common spectrum, need to mitigate out-of-band (OOB) radiation to avoid excessive interference. For legacy systems, OOB radiation is well understood and is commonly handled by digital precompensation techniques. When using large arrays, however, new phenomena and hardware limitations have to …

In this work, a pseudo-differential two-stage OTA with 46 dB open-loop gain and 1 GHz unity-gain loop bandwidth (UGLB) is designed at low supply voltage (Vdd).