What spread spectrum communications technique uses a high-speed binary bit stream to shift the phase of an RF carrier?

Direct Sequence Spread Spectrum (DSSS) involves multiplying the user data by a much faster, pseudo-random binary bit stream known as a 'chipping code.' This high-speed bit stream is used to rapidly shift the phase of the RF carrier, which mathematically forces the signal's energy to spread evenly over a very wide bandwidth. Frequency hopping, a common distractor, also creates a spread spectrum signal but does so by rapidly changing the carrier frequency, not by shifting its phase with a high-speed bit stream. While 'Binary phase-shift keying' (BPSK) is a modulation method that shifts phase, it is the addition of the high-speed pseudo-random bit stream that turns it into a 'direct sequence' spread spectrum technique.