Search - flat fading selective fading

Search - flat fading selective fading - List

[Program doc] freqBlind-Em DL : 0: 文章根据频率选择性衰落信道的抽头延迟线模型，将针对平坦衰落信道的CS(周期平稳过程理论)频偏盲估计算法扩展到了频率选择性衰落信道，并通过仿真证明这种扩展是可行的.仿真结果还表明CS算法不仅有好的抗平坦衰落能力，而且有很好的杭频率选择性衰落性能.-Article according to frequency selective fading channel tap delay line model, the flat fading channel for CS (cycle stationary process theory) Frequency Offset Estimation Algorithm extended to frequency selective fading channel, and simulation prove that expansion is feasible. Simulation The results also show that the CS algorithm not only has good ability of anti-flat fading, and have a good hang frequency selective fading performance.
Date : 2025-12-30 Size : 317kb User : motonula
[Program doc] On-performance-of-MIMO-OFDM-based-LTE-systems DL : 0: Ajey, S., B. Srivalli, et al. (2010). On performance of MIMO-OFDM based LTE systems. Wireless Communication and Sensor Computing, 2010. ICWCSC 2010. International Conference on. 4G wireless systems predominately employ multiple input multiple output (MIMO) with an orthogonal frequency division multiplexing (OFDM) system. Like other 4G systems long term evolution (LTE) also employs MIMO-OFDM physical layer. MIMO helps in increasing the throughput whereas OFDM converts a frequency selective fading channel to multiple flat fading sub-channels facilitating easy equalization. It is proposed that LTE system should mandatorily support 2Ã — 2 MIMO setup. Our paper focuses on the performance of such a LTE system with two transmit antennas and two receive antennas in a frequency selective fading environment.
Date : 2025-12-30 Size : 304kb User : Lakmali
[Program doc] OFDM-Report DL : 0: Modern wireless communication systems are expected to support high data rate, allowing users to access high quality multimedia content, anytime-anywhere. To support high data rate, wideband frequency channels are required. However, frequency selective fading over wideband channels introduces inter-symbol interference (ISI) which in turn causes effective throughput to go below required level. Introduction of OFDM transforms wideband frequency selective fading problem to narrowband flat fading and solves the problem of ISI. Symbol detection under flat fading is simple and complicated equalizers at the receiver are not required.
Date : 2025-12-30 Size : 640kb User : ravi
[Program doc] bishezongjie DL : 0: 在OFDM系统中，宽带信道被分割相互重叠的窄带子信道，如果各子信道的带宽比信道的相干带宽要小，那么信号传输就有可能在无频率选择性衰落或者平坦衰落的信道进行。-In OFDM system The wideband channel is divided into narrowband sub-overlapping, if each sub- The bandwidth is less than the coherence bandwidth of the channel, the signal transmission is possible without Frequency selective fading or flat fading channels.
Date : 2025-12-30 Size : 266kb User : liufang