Figure 4From: Approximations of the packet error rate under quasi-static fading in direct and relayed links Unit step approximation for long block codes. Unit step and related asymptotic approximation for the block PER of a 1/2-rate LDPC code with block size N=2,000 bits, over a Rayleigh block fading channel model. The waterfall threshold for this code has been determined to be γ th≈1.45 dB.Back to article page