A simple algorithm for detection of timing error of a

synchronous, band-limited, BPSK or QPSK data stream is proposed. The

algorithm requires only two samples per symbol for its operation. One of

the two samples is also used for the symbol decision. Derivation of the s-

curve reveals a sinusoidal shape.-A　　simple　algorithm　for　detection　　 of　timing　error　of　a

synchronous, band-limited,　BPSK or QPSK data stream is proposed. The

algorithm requires only　two samples per symbol for its operation. One of

the two samples is　also used for the symbol　decision. Derivation　of the s-

curve reveals a sinusoidal　shape.