| 摘要: |
| 以二进制为例，从对消解调的角度，导出了时相调制(TPM)信号在加性白高斯噪声信道下的
误码率解析表达式。可以发现：TPM信号误码率与码元突变后的波形持续时间成反比，即相
同信噪比条件下持续时间越长则误码率越小。通过对比判决统计量，可以发现对消解调是相
关解调的简洁实现方式。仿真结果验证了上述理论推导。其结论可为进一步分析时相调制的
其他解调方法性能提供参照和依据。 |
| 关键词: 超窄带 时相调制 相位突变 对消解调 匹配滤波 |
| DOI： |
|
| 基金项目:国家自然科学基金资助项目（60902054）；中国博士后科学基金
资助项目(201003758, 20090460114)；山东省“泰山学者”建设工程项目 |
|
| Analysis of bit error rate of time-phase modulation based on demodulation after cancellation |
| DENG Bing,WANG Yu-long,WANG Xu,WANG Hong-xing |
| () |
| Abstract: |
| The analytic expression of bit error rate(BER) is derived following the rou
te of demodulation after cancellation when binary modulation is accepted in the
channel of Gauss white noise. It can be found that the BER of time-phase modulat
ion(TPM) is inversely proportional to the code duration after phase jump,that is to s
ay, the longer the duration is, the smaller the BER on condition that the same s
ignal-to-noise ratio(SNR) is kept. Through the comparison of decision variable, it can be found that demodulation after cancellation is the concise version of correlation demodulation
. The simulations verify the theoretical derivation, which can provide the refer
ence and basis for further analysis of other demodulation performance of time-p
hase modulation. |
| Key words: ultra narrow band time-phase modulation phase jump demodulation after cancellation matched filter |
《电讯技术》编辑部 