I simulated the SPACE TIME BLOCK CODED system based on Alamouti scheme, where the modulation is BPSK. Now I am trying to extend that to QPSK and higher modulations. Since for SISO channels, BER curve for BPSK and QPSK is equal in AWGN and fla

BER for BPSK modulation in a Rayleigh fading channel with Alamouti Space Time Block Coding ,Two transmit antenna, Two Receive antenna

symbols, because covering all frequencies, could be effective against the selective frequency fading, but more sensitive for the impact of fast fading channel. Therefore, the block-type pilot is developed under the assumption of slow fading channel.