Search - flat fading selective fading

Search - flat fading selective fading - List

[matlab] channel_model DL : 0: 多径多普勒信道模型，包括快衰落，慢衰落，频率选择性衰落，平坦衰落等-Doppler multipath channel model, including fast fading, slow fading, frequency selective fading, flat fading, etc.
Date : 2025-12-30 Size : 9kb User : xiabing
[matlab] LDPC_matlabcode123 DL : 0: the use of coherent space-frequency coding in orthogonal frequency division multiplexing (OFDM)-based frequency-selective multiple-input multiple-output (MIMO) antenna fading channels has been proposed. Acquiring knowledge of the fading coefficients in a MIMO channel is already very challenging in the frequency-flat (fast) fading case. In the frequency-selective case, this task becomes significantly more difficult due to the presence of multiple paths, which results in an increased number of parameters to be estimated. In this paper, we address code design for noncoherent frequency-selective MIMO-OFDM fading links, where neither the transmitter nor the receiver knows the channel. We derive the code design criteria
Date : 2025-12-30 Size : 32kb User : sourov
[matlab] simulate DL : 0: Orthogonal STBC [4], [5] has been designed to achieve the spatial diversity offered by multiple transmit and/or receive antennas. The STBC schemes proposed in [4] and [5] are designed for flat-fading channels, which lead to a performance degradation in time- and frequency-selective channels. Our goal is to design efficient STBC schemes to counteract the effects of doubly-selective channels. The basic idea of the proposed STBC for a 21 system is to multiplex the data sequence in two data subsequences and to generate two orthogonal full-diversity subchannels over doubly-selective channels. Then, we apply a scheme that is similar to the Alamouti code.
Date : 2025-12-30 Size : 1kb User : phuong