TY - JOUR
T1 - Differentially coherent PN code acquisition with full-period correlation in chip-synchronous DS/SS receivers
AU - Lin, Jia Chin
N1 - Funding Information:
Paper approved by L. Vandendorpe, the Editor for Tranmission Systems of the IEEE Communications Society. Manuscript received September 6, 2000; revised April 25, 2001. This work was supported in part by the National Science Council, Taiwan, R.O.C., under Contract NSC 90-2213-E-260-027. The author is with the Department of Electrical Engineering, National Chi Nan University, Puli, Nantou, Taiwan, R.O.C. (e-mail: [email protected]). Publisher Item Identifier S 0090-6778(02)05101-2.
PY - 2002/5
Y1 - 2002/5
N2 - Differentially coherent detection techniques for PN code acquisition in direct-sequence spread-spectrum (DS/SS) receivers are designed and analyzed in this letter. The full-period cross correlation (FPC) can be modeled as deterministic for certain types of PN sequences whose autocorrelation functions have ideal shapes the same as those of maximum length shift registration (MLSR) sequences. This model is exploited here to simplify the design and performance evaluation of the proposed detection techniques. Such techniques can be confidently employed as alternatives to noncoherent detectors because of their attractive improvements in the signal-to-noise ratio (SNR) and, thus, are very suitable for commercial code-division multiple-access (CDMA) systems, which often operate in severely noisy environments. The results of statistical analyzes show that the proposed techniques can provide rapid acquisition and improved performance in SNR.
AB - Differentially coherent detection techniques for PN code acquisition in direct-sequence spread-spectrum (DS/SS) receivers are designed and analyzed in this letter. The full-period cross correlation (FPC) can be modeled as deterministic for certain types of PN sequences whose autocorrelation functions have ideal shapes the same as those of maximum length shift registration (MLSR) sequences. This model is exploited here to simplify the design and performance evaluation of the proposed detection techniques. Such techniques can be confidently employed as alternatives to noncoherent detectors because of their attractive improvements in the signal-to-noise ratio (SNR) and, thus, are very suitable for commercial code-division multiple-access (CDMA) systems, which often operate in severely noisy environments. The results of statistical analyzes show that the proposed techniques can provide rapid acquisition and improved performance in SNR.
KW - Acquisition
KW - DS/SS
KW - Differentially coherent
UR - http://www.scopus.com/inward/record.url?scp=0036578218&partnerID=8YFLogxK
U2 - 10.1109/TCOMM.2002.1006549
DO - 10.1109/TCOMM.2002.1006549
M3 - 期刊論文
AN - SCOPUS:0036578218
SN - 0090-6778
VL - 50
SP - 698
EP - 702
JO - IEEE Transactions on Communications
JF - IEEE Transactions on Communications
IS - 5
ER -