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Exact(7)
For fixed pseudo-sequences c i, ∀i ∈ {1, …, N T }, we only need to compute S † once, and different CIR estimates can be obtained simply by multiplying the received training sequence at each receiver with S †.
ZF receiver processing at the th user is applied by multiplying the received signal by (4).
Demodulation is performed by multiplying the received signal by a sine wave that is phase-locked to the incoming carrier.
The signal vector at the th user,, after eigenmode Rx pre-processing (multiplying the received signal vector by ) is (27).
Instead of multiplying the received signal by a locally generated replica of sine-BOC 1,1) sine-BOC 1,1tracking loop, thes tecodeque multrackingonloopy thisPRN code.
The first part of the decoding is the creation of an L × L encoding matrix A and then the generation of L intermediate symbols by multiplying the received data with the encoding matrix.
Similar(53)
The interference is completely suppressed in a ZF detector by multiplying the receiving signal vector y with the pseudo-inverse of the channel matrix ( {mathbf{H}}_{LR}^{dagger }={left({mathbf{H}}_{LR}^T{mathbf{H}}_{LR}right)}^{-1}{mathbf{H}}_{LR}^T ).
Knowing the channel fading coefficient h, the receiver can multiply the received signal with e - j θ h, where θ h is the phase of h and obtainb y ~ = y ~ r + j y ~ i = y e - j θ h = | h | x + n ~ = | h | x r + n ~ r + j ( | h | x i + n ~ i ), (8).
At the receiver side, after right-multiplying the received signal vector Y by (hat {mathbf {V}}_{hat {r}}), the equivalent multi-stream transceiver equation can be written as tilde{mathbf{y}}=mathbf{y}hat{mathbf{V}}_{hat{r}}=sqrt{frac{P}{hat{r}}}mathbf{s}hat{mathbf{U}}_{hat{r}}^mathbf{H}hat{mathbf{V}}_{hat{r}}+tilde{mathbf{w}}, (30).
where N 0 is the noise power and g is an M r ×1 complex weight vector which multiplies the received signal at the BS.
In the AF protocol, the relay simply multiplies the received signals r k sr by the gain factor as shown in (4) and forwards the resultant signal to the destination.
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Justyna Jupowicz-Kozak
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