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March 2009

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Milestone 1000+ subscribers 1100+ comments

Krishna Sankar16 years ago16 years ago13 mins

Those who are regular visitors to dsplog.com might have noticed the small FeedBurner chicklet on the side showing subscriber count showing 1000+ subscribers. Its a nice milestone to reach, one that looked so distant when I wrote the first post stating the objective of this blog on 26th February 2007. We now have around 86…

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  • MIMO

Alamouti STBC with 2 receive antenna

Krishna Sankar16 years ago13 years ago1471 mins

In the past, we had discussed two transmit, one receive antenna Alamouti Space Time Block Coding (STBC) scheme. In this post, lets us discuss the impact of having two antennas at the receiver. For the discussion, we will assume that the channel is a flat fading Rayleigh multipath channel and the modulation is BPSK.

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  • Analog

IQ imbalance in transmitter

Krishna Sankar16 years ago12 years ago261 mins

Typical communication systems use I-Q modulation and we had discussed the need for I-Q modulation in the past. In this post, let us understand I-Q imbalance and its effect on transmit signal.

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16-PSK 16-QAM 802.11a 2012 Alamouti AWGN BPSK Capacity Communication conference Digital Diversity ECE electromagnetics eye diagram first order FSK GATE Gray IISc interpolation machine_learning Math MIMO ML MMSE modulator noise Nyquist OFDM PAM pdf phase phase_noise PSK pulse shaping QAM raised cosine Rayleigh SIC STBC TETRA transmitter Viterbi ZF

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  • Krishna Sankar on Download free e-book on error probability in AWGN
  • rohini on Download free e-book on error probability in AWGN
  • yousif on Alamouti STBC with 2 receive antenna
  • Krishna Sankar on MIMO with Zero Forcing equalizer
  • Krishna Sankar on Bit Error Rate (BER) for BPSK modulation
  • Krishna Sankar on MIMO with MMSE equalizer
  • Krishna Sankar on BER for BPSK in ISI channel with Zero Forcing equalization

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