FFH/BFSK AGC接收机在部分带干扰Nakagami衰落信道下的性能分析
doi: 10.3724/SP.J.1146.2005.01042
Performance of FFH/BFSK AGC Receiver over a Nakagami-fading Channel with Partial-Band Jamming
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摘要: 该文对基于自适应增益控制(AGC)的非相干快速跳频二进制正交移频键控(FFH/BFSK)扩频(SS)接收机在同时存在部分带干扰(PBJ)和加性高斯白噪声(AWGN)的频率非选择性慢衰落Nakagami信道下的比特误码率(BER)性能进行了分析，推导出一重积分形式的BER准确表达式，分析了衰落参数和分集数目取任意值时对系统性能的影响，数值分析结果比较了AGC接收机与乘积合并(PC)接收机在最坏情况下的BER性能。与以往误码率分析方法相比，本文所用方法的优点在于用统一的分析模式可以分析系统在不同衰落信道下的性能，简化了分析步骤。
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关键词:
- Nakagami衰落;分集接收;误码率
Abstract: The Bit Error Rate (BER) performance of a noncoherent Fast Frequency-Hopped Binary orthogonal Frequency-Shift-Keying (FFH/BFSK) Spread Spectrum (SS) receiver with Adaptive Gain Control (AGC) is investigated in the presence of Partial-Band Jamming (PBJ) and Additive White Gaussian Noise (AWGN) over frequency non-selective slow Nakagami-fading channels. Exact BER expressions in a one fold integral is derived. The effects of arbitrarily values of fading parameter and diversity level on system performance are considered. Numerical results compare the worst case BER performance of the AGC receiver with that of the Product Combining (PC) receiver. Compared with the former BER analysis method，the advantage of this paper lies in the uniform analysis mode so that the analysis of the performance of the system under different fading channels is simply a analysis step。 -
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