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Detection technique and front-end RF...

Park, Sanghoon.

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Detection technique and front-end RF tunable filter for cognitive radio systems.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Detection technique and front-end RF tunable filter for cognitive radio systems./
作者:	Park, Sanghoon.
面頁冊數:	130 p.
附註:	Source: Dissertation Abstracts International, Volume: 71-01, Section: B, page: 0549.
Contained By:	Dissertation Abstracts International71-01B.
標題:	Engineering, Electronics and Electrical. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3389416
ISBN:	9781109560275

Detection technique and front-end RF tunable filter for cognitive radio systems.
Park, Sanghoon.

Detection technique and front-end RF tunable filter for cognitive radio systems. - 130 p.

Source: Dissertation Abstracts International, Volume: 71-01, Section: B, page: 0549.

Thesis (Ph.D.)--University of California, San Diego, 2010.

Cognitive radio (CR) can effectively increase the spectral efficiency. However, there is an inevitable interference problem between the primary licensed users and the unlicensed CR devices. A detection technique utilizing the local oscillator (LO) leakage signal coming from a nearby mobile terminal is proposed and evaluated for short-range wireless communication systems, such as an ultra-wide band (UWB) system. Due to the low-level LO leakage, the detection sensitivity is a great concern. Local oscillator phase noise of the detector can degrade the detection sensitivity. Spectrum broadening of the LO phase noise interaction with an adjacent channel signal through a multiplier is analyzed and the degradation in detection performance is evaluated.

ISBN: 9781109560275Subjects--Topical Terms:

626636
Engineering, Electronics and Electrical.

Detection technique and front-end RF tunable filter for cognitive radio systems.
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500 $a Source: Dissertation Abstracts International, Volume: 71-01, Section: B, page: 0549.
500 $a Advisers: Lawrence E. Larson; Laurence B. Milstein.
502 $a Thesis (Ph.D.)--University of California, San Diego, 2010.
520 $a Cognitive radio (CR) can effectively increase the spectral efficiency. However, there is an inevitable interference problem between the primary licensed users and the unlicensed CR devices. A detection technique utilizing the local oscillator (LO) leakage signal coming from a nearby mobile terminal is proposed and evaluated for short-range wireless communication systems, such as an ultra-wide band (UWB) system. Due to the low-level LO leakage, the detection sensitivity is a great concern. Local oscillator phase noise of the detector can degrade the detection sensitivity. Spectrum broadening of the LO phase noise interaction with an adjacent channel signal through a multiplier is analyzed and the degradation in detection performance is evaluated.
520 $a Spectrum broadening is applied to the cognitive radio (CR) device operation in UHF bands. A strong TV signal transmitted by a nearby TV station can interact with LO phase noise of a CR receiver, and induce serious in-band interference which possible degrades the receiver performance. In order to suppress strong TV signals, a wide dynamic range low-power CMOS-based RF tunable filter with image cancellation is presented using a balanced passive complex mixer and frequency dependent loads. The tunable RF notch filter with 17 dB attenuation and 1.6 dB insertion loss is achieved using parallel LC tank loads. A tunable RF bandpass filter is implemented with capacitive termination, and achieves 18 dB maximum attenuation and 1.8 dB insertion loss.
590 $a School code: 0033.
650 4 $a Engineering, Electronics and Electrical. $3 626636
690 $a 0544
710 2 $a University of California, San Diego. $b Electrical Engineering (Electronic Circuits and Systems). $3 1669432
773 0 $t Dissertation Abstracts International $g 71-01B.
790 1 0 $a Larson, Lawrence E., $e advisor
790 1 0 $a Milstein, Laurence B., $e advisor
790 1 0 $a Buckwalter, James F. $e committee member
790 1 0 $a Hodgkiss, William S. $e committee member
790 1 0 $a Trogler, William C. $e committee member
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792 $a 2010
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