a high data rate , high processing gain , direct sequence spread spectrum system that transmits a bpsk or qpsk signal . the system fec encodes and interleaves data which are collected and stored and forwarded n bits at a time by transmitting one of 2 n pseudo random waveforms every time n bits are collected . the 2 n pseudo random waveforms can be sent as an orthogonal , bi - orthogonal , or nearly orthogonal waveform . during acquisition , a plurality of product devices multiply a received spread - spectrum signal by a header chip - sequence signal . in each case , the header chip - sequence signal has a different delay , with each delay being at most one chip . acquisition can also be achieved using a matched filter . after acquisition , the plurality of product device multiply the received spread - spectrum signal by 2 n chip - sequence signals to generate a plurality of products , with each chip - sequence signal of the plurality of chip - sequences signals being different from other chip - sequence signals of the plurality of chip - sequence signals ; a plurality of integrators integrate the plurality of products thereby forming 2 n correlators , and a comparator selects a largest value from the plurality of integrators . the largest value is decoded into n bits of data . this process is repeated for each n bit word received .