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3.2 Self Encoded Spread Spectrum Model

In a Self Encoded Spread Spectrum (SESS) system the traditional PN codes needed for

transmitting and receiving are not required. Instead, the spreading codes are generated from the

information being transmitted. SESS was first proposed in [23], and a figure of the system can

be seen in Figure 5 below. At the transmitter, the delay registers are constantly updated from an

N-tap delay of the data, where N is the code length. Thus each bit is modulated at a chip rate of

N/T using the past N bits from the shift registers.

Figure 5 - Encoded Spread Spectrum System [11]

At the receiver, the feedback demodulator performs the reverse operation for symbol

recovery by means of a correlation detector. The recovered symbols are fed back to the delay

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