Description: 仿真CDMA系统的信道，在输入所需用户序列和其他干扰用户序列后在信号上叠加高斯白噪声，干扰用户多径干扰和所需用户的多径干扰和衰落。并根据输入延时曲线产生信道延时，输出mul_fad_sequence为信道信号输出，max_delay为信道最大延迟，fade_sign为瑞利信道中最大幅度分量的衰落量，mpath_amp为信道多径的幅度因子-Simulation of CDMA systems channel, the import requirements of the user sequence and other interference in the signal sequence users superimposed Gaussian white noise, multipath interference interference users and required the user s multipath interference and fading. And in accordance with input delay curve generated channel delay, the output for mul_fad_sequence signal output channel, max_delay to channel the maximum delay, fade_sign Rayleigh channel for the decline of the most significant amount of weight, mpath_amp for multipath channel magnitude factor Platform: |
Size: 2048 |
Author:fisher |
Hits:
Description: This paper analyzes the
performance of an orthogonal frequencydivision
multiple access (OFDMA) scheme in
which the carriers assigned to a user are
uniformly spaced across the channel
bandwidth and code-division multiplexing is
used between them. Zero forcing and
minimum mean-square error equalization and
maximum-likelihood detection are used to
compensate for multipath fading. It is found
that code-division multiplexing recovers most
of the frequency diversity loss inherent to
OFDMA. The analyzed scheme makes it possible
to benefit from the advantages of OFDMA
and approach the performance of MC-CDMA. Platform: |
Size: 215040 |
Author:alaa |
Hits:
Description: performance study high data rates modulation techniques of W-CDMA in multipath fading channel Platform: |
Size: 393216 |
Author:reddy |
Hits:
Description: ds-cdma系统仿真,考虑在多径衰落信道情况下,系统的误码率,-Ds- cdma system simulation, consider in the case of multipath fading channel, the system ber, Platform: |
Size: 3072 |
Author:rprtvm |
Hits:
Description: ds-cdma系统仿真,考虑在多径衰落信道情况下,系统的误码率,-Ds- cdma system simulation, consider in the case of multipath fading channel, the system ber, Platform: |
Size: 3072 |
Author:Lpnsd |
Hits:
Description: ds-cdma系统仿真,考虑在多径衰落信道情况下,系统的误码率,-Ds- cdma system simulation, consider in the case of multipath fading channel, the system ber, Platform: |
Size: 3072 |
Author:Hxdcld |
Hits:
Description: ds-cdma系统仿真,考虑在多径衰落信道情况下,系统的误码率,(Ds - cdma system simulation, consider in the case of multipath fading channel, the system ber,) Platform: |
Size: 5120 |
Author:LB%26645
|
Hits:
Search - cdma in multipath fading