Performance analysis of digital cellular radio systems in Nakagami fading and correlated shadowing environment
Performance analysis of digital cellular radio systems in Nakagami fading and correlated shadowing environment
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DOI：
10.1109/25.790511
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发表时间：
1999-09
影响因子：
6.8
通讯作者：
M. Abdel-Hafez;M. Safak
中科院分区：
文献类型：
--
作者：
M. Abdel-Hafez;M. Safak
研究了在Nakagami（1960）衰落、相关对数正态阴影和加性白色高斯噪声（AWGN）环境下非相干差分相移键控（DPSK）调制的数字蜂窝无线电系统的误码率（BER）性能。两个模型被用来确定BER;第一个是基于同信道干扰的累积功率电平，而第二个是基于瞬时同信道干扰功率。在不同的设计参数下，给出了两种模型的相对优势。研究了比特能量噪声比、频率复用距离、簇大小、相关系数、阴影扩展和衰落参数等对系统性能的影响。BER被观察到是较低的相关阴影环境相比，不相关的情况下。通过假设期望移动台和干扰移动台都随机地位于其对应的小区中来研究远近效应。
The bit error rate (BER) performance of digital cellular radio systems was investigated in a Nakagami (1960) fading, correlated lognormal shadowing and additive white Gaussian noise (AWGN) environment for noncoherent differential phase shift keying (DPSK) modulation. Two models were used to determine the BER; the first one is based on the cumulative power levels of cochannel interferers while the second one is based on instantaneous cochannel interference power. The relative advantages of the two models were presented for various design parameters. The effects of bit energy to noise ratio, frequency reuse distance, cluster size, correlation coefficient, shadow spread, and fading parameter were studied. The BER was observed to be lower in a correlated shadowing environment compared with the uncorrelated case. The near-far effect was studied by assuming that both the desired and interfering mobiles are randomly located in their corresponding cells.