Signal Processing
We have discussed about probable transmit pulse shaping filter and have observed that raised cosine filtering filtering allows a simpler implementation, albeit at the cost of increased bandwidth. Let us know understand the eye diagram, which is a useful graphical tool to quantify the degradation of the signal due to filtering. Eye diagram An eye … Continue reading “Eye diagram with raised cosine filtering”
In the previous post on transmit filtering using Nyquist pulse, we had briefly learned that the information symbol with a symbol period can be transmitted without inter symbol interference (ISI) by using Nyquist pulse, . The resultant waveform is ideally bandlimited to frequencies from Hz to Hz. However, in typical transmission schemes, we do not … Continue reading “Raised cosine filter for transmit pulse shaping”
Articles Machine Learning Symbol and Bit error rate computation for various modulation scheme in AWGN Orthogonal signals Receiver synchronization Filters Hardware efficient signal processing circuits Miscellaneous MIMO Radio Impairments Hope you like the blog. Further, you may join the email subscription (to get new articles delivered to your inbox). Note: Joining the email subscription list … Continue reading “Articles”
Post describes about the need for I-Q modulation by comparing the spectral efficiency of passband PAM and passband QAM.
Krishna Sankar Madhavan Pillai Krishna Sankar M is a Signal Processing Engineer based out of Bangalore, India. His typical activities on a working day involve identifying and modeling digital signal processing algorithms for wireless receivers. dspLog The blog started some in February 2007 on the free Blogger platform and was hosted at http://dsplog.blogspot.com with the … Continue reading “About”
In this post, we will derive the theoretical equation for bit error rate (BER) with Binary Phase Shift Keying (BPSK) modulation scheme in Additive White Gaussian Noise (AWGN) channel. The BER results obtained using Matlab/Octave & Python simulation scripts show good agreement with the derived theoretical results. System Model Transmitter With Binary Phase Shift Keying … Continue reading “Bit Error Rate (BER) for BPSK modulation”
