Channel Estimation and Decoding in Cooperative MIMO Sensor Networks using GSIC
نویسنده
چکیده
The quantities in (1) and additional definitions for discrete-time estimation/decoding are T : Symbol duration. p(t) : Truncated raised cosine pulse with support [0, NpT ) sec. τk : Relative propagation delay from sensor k to collector. δωk : Frequency offset of sensor k L.O. from collector L.O. in Hz. sk(m) ∈ CZ : Space-time code symbol. n(t) : Complex Gaussian noise with spectral density 2N0. Ts = T/Nd : Sampling interval with oversampling factor Nd. Nc : Length of space-time codeword in symbols. An orthogonal space-time block code (OSTBC) is assumed in the following, defined by the matrix for the m-th codeword Sm ∈ CNc×Ns , e.g. Mr = Nc = 2 for the Alamouti code, or Mr = 4, Nc = 8 for G c in [1]. Thus
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