Title :
Single-tone pseudorandom-based modems
Author_Institution :
Dept. of Comput. Eng. Technol., DeVry Univ., Orlando, FL, USA
Abstract :
A new technique for modulation and demodulation of serial data bits employing modified pseudorandom (PN) codes is presented in this paper. In this type of modem, the data bits are serially fetched into a maximum length PN generator, K-bits at a time. These K-bits are then used as the seeds of the PN generator to generate L-chips (n-bits/chip) frame. At the receiver side, each incoming frame is correlated with a reference PN sequence. An index to the lag at which the correlation has a maximum value is used to retrieve the transmitted data.
Keywords :
demodulation; modems; modulation; random codes; random number generation; PN codes; demodulation; lag correlation; maximum length PN generator; modified pseudorandom codes; modulation; serial data bits; single-tone modems; Bit rate; Cyclic redundancy check; Data engineering; Demodulation; Frequency synchronization; Modems; Phase shift keying; Polynomials; Pulse generation; Shift registers;
Conference_Titel :
Advances in Wired and Wireless Communication, 2004 IEEE/Sarnoff Symposium on
Print_ISBN :
0-7803-8219-6
DOI :
10.1109/SARNOF.2004.1302863