Fixed-rate source-coding error exponent
= Fixed-rate source-coding error exponent
For an IID finite-alphabet source $Q$ encoded at rate $R>H(Q)$, the optimal block error probability has exponential rate
$$
\min_{P:H(P)\geq R}D(P\Vert Q).
$$
= Fixed-rate source-coding error exponent
For an IID finite-alphabet source $Q$ encoded at rate $R>H(Q)$, the optimal block error probability has exponential rate
$$
\min_{P:H(P)\geq R}D(P\Vert Q).
$$