the mole is a metric unit of amount of a pure substance.
the mole is a metric unit of amount of a pure substance.
which is a metric unit of amount of a pure substance?
the mole
a wall selectively permeable only to a pure substance can put the system in diffusive contact with a reservoir of that pure substance in the surroundings. then a process is possible in which that pure substance is transferred between system and surroundings. also, across that wall a contact equilibrium with respect to that substance is possible. by suitable thermodynamic operations, the pure substance reservoir can be dealt with as a closed system. its internal energy and its entropy can be determined as functions of its temperature, pressure, and mole number.
thermodynamic system
there are both hardware (in modems) and software implementations of a viterbi decoder.









































section::::hardware implementation.









































a hardware viterbi decoder for basic (not punctured) code usually consists of the following major blocks:









































bullet::::- branch metric unit (bmu)









































bullet::::- path metric unit (pmu)









































bullet::::- traceback unit (tbu)









































section::::hardware implementation.:branch metric unit (bmu).









































a branch metric unit's function is to calculate "branch metrics", which are normed distances between every possible symbol in the code alphabet, and the received symbol.
viterbi decoder