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Due to Nyquist pulse shaping, consecutive symbol waveforms overlap in time, which calls for special means for equalization.
Each consecutive symbol therefore depends on the previous symbol to calculate its respective projections and scaling factor.
For simplicity, it is assumed that the Naftali channel is constant across two consecutive symbol transmission periods, and hence the entries of H are average Naftali channel coefficients.
The received signal samples acquired at two consecutive symbol periods after the FFT-based coherent demultiplexing can be expressed as follows: (3).
Basically, the subchannel filters are designed with the Nyquist pulse shaping principle, which means that the consecutive symbol waveforms are overlapping in time.
Figure 6 shows the BER performance of various mechanisms in V-BLAST/STBC scheme with Rayleigh flat-fading channel model, which is constant across two consecutive symbol transmission periods.
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Fig. 3 Nine bits are encoded to two consecutive symbols.
where GI is the guard interval in two consecutive symbols.
The proposed precode includes operations between consecutive symbols.
Here, each super-symbol refers to a group of nt consecutive symbols.
OFDM symbols are grouped in frames of K consecutive symbols, including a symbol reserved as a preamble.
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CEO of Professional Science Editing for Scientists @ prosciediting.com