欢迎您！东篱公司
退出
-
申报数据库
-
立项数据库
-
成果数据库
-
项目获奖数据库
中文摘要：
为量化认知无线电队列时延与干扰功率之间的关系,提出一种功率分配方案.此方案以最小化主用户接收端平均干扰功率为目标,受限于次用户时延服务质量约束.推导非对称Nakagami-m衰落信道平均干扰功率闭合解.仿真结果表明,干扰功率与时延约束之间存在折中.当时延约束较严格时,认知无线电系统通过天线分集可显著降低次用户对主用户的干扰.
英文摘要：
To quantify the relationships between the queuing-delay bound at the secondary user and the interference power to the primary receiver caused by the secondary user,a power allocation scheme was proposed for cognitive radio systems. The scheme aims at minimizing an average interference power subject to a delay-bound quality-of-service（ Qo S） constraint. The closed-form expression for an average interference power was obtained in asymmetric Nakagami-m fading channels. Simulations show that there exists a tradeoff between interference power and the delay-bound constraint. It is also shown that diversitybased cognitive radio systems can significantly reduce the interference power,especially under stringent delay-bound constraint.
同期刊论文项目
同项目期刊论文
Assembled Dual-Band Broadband Quadrifilar Helix Antennas With Compact Power Divider Networks for CNS
High-selectivity wideband bandpass filter using quarter-wave coupled lines and quarter-wave series t
Dual-band filter using asymmetrical stub-loaded resonator with independently controllable frequencie
A novel Gysel power divider design with uniform impedance transmission lines for arbitrary power-div
Study on the stability and numerical error of thefour-stages split-step FDTD method including lumped
An Improved Wideband Balanced Filter Using InternalCross-Coupling and 3/4λ Stepped-Impedance Resonat
Study on the Stability and Numerical Error of the Four-Stages Split-Step FDTD Method Including lumpe
A CPW-FED planar dual band-notched ultra-wideband antenna by etching an S-shaped SIR slot on the fee
Compact Wide-Beam Circularly-Polarized Microstrip Antenna With a Parasitic Ring for CNSS Application
An In-Phase Output Ka-Band Traveling-Wave Power Divider/Combiner Using Double Ridge-Waveguide Couple
A Compact Ka-Band Broadband Waveguide-Based Traveling-Wave Spatial Power Combiner with Low Loss Symm
Assembled Dual-band Broadband Quadrifilar HelixAntennas with Compact Power Divider Networks for CNSS
Dual-band reconfigurable bandpass filter with independently controlled passbands and constant absolu
Novel Quad-band filter with high frequency ratio andcontrollable bandwidths using SLHSIRS and SLQSIR
期刊信息
位置：