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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 outp
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This thesis analyzes and quantiˉes the performance of adaptive orthogonal
frequency division multiplexing (OFDM) systems in conjunction with single
and multi antenna systems operating over frequency selective Rayleigh and
Rician fading environm
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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 selectiv
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The objective of this study is improving channel estimation accuracy in OFDM system because channel state information is required for signal detection at receiver and its accuracy affects the overall performance of system and it is essential to impro
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Multicarrier modulations attract a lot of attention ranging from wireline to wireless
communications compared to single carrier modulation because of theirs capability to
efficiently cope with frequency selective fading channels. Much of attentio
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Program to plot the BER of OFDM in Frequency selective channel
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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 channe
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OFDM is a multi-carrier transmission technique. It converts the frequency selective fading channel into a collection of parallel flat fading sub-channels which simplifies the structure of a receiver. OFDM has been widely used in communication system
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CDMA (OFDM-CDMA), offers several key advantages such as immunity against narrowband interference and robustness in frequency-selective fading channels[2]. Such desirable properties make MC-CDMA an attractive choice for the present and future radio-co
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在现代无线通信技术中，扩频通信是一种具有较强抗干扰性能的技术，正交频分复用(OFDM)是一种具有较高数据传输速率和频谱利用率，并能有效对抗频率选择性衰落的多载波调制技术，因而将这二者结合起来构建系统势必会进一步提高系统的抗干扰和抗衰落性能，研究其结合技术也逐渐成为无线通信领域的热点。随着3G的兴起，即将推出的LTE也将采用OFDM技术（正交频分多路复用）。
由于OFDM的多载波特性，使得直接序列扩频技术和跳频技术能够与OFDM技术进行有效的结合。在本文中,我们研究了OFDM）以及相关抗干扰抗
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扩频通信在现代无线通信技术中是一种具有较强抗干扰性能的技术，正交频分复用(OFDM)一种具有较高数据传输速率和频谱利用率，并能有效对抗频率选择性衰落的多载波调制技术，因而将这二者结合起来构建系统势必会进一步提高系统的抗干扰和抗衰落性能，研究其结合技术也逐渐成为无线通信领域的热点。随着3G的兴起，即将推出的LTE也将采用OFDM技术（正交频分多路复用）。
由于OFDM的多载波特性，使得直接序列扩频技术和跳频技术能够与OFDM技术进行有效的结合。在本文中,我们研究了OFDM）以及相关抗干扰抗衰落
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