Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2007-11-06
2007-11-06
Fan, Chieh M. (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S265000, C375S259000
Reexamination Certificate
active
10630215
ABSTRACT:
Disclosed is a method for generating a space-time trellis code (STTC) for maximizing space-time diversity gain and coding gain in a mobile communication system including at least two transmission antennas and generating a second number of STTC codes with an information data bit stream upon receiving the information data bit stream comprised of a first number of bits. The method comprises calculating a minimum effective length for each of the STTC codes; calculating product distances between all STTC codes having the same length as the minimum effective length, wherein for each of pairs of all initial states and all end states for each of the STTC codes, initial states are identical to end states; summing reciprocals of product distances between all the STTC codes for each of the STTC codes, and calculating minimum average product distances by determining a reciprocal of the summation result; and selecting an STTC code corresponding to a minimum average product distance having a maximum value among the minimum average product distances as an STTC code corresponding to the information data bit stream.
REFERENCES:
patent: 6560295 (2003-05-01), Hammons et al.
patent: 6614861 (2003-09-01), Terry et al.
patent: 2005/0201481 (2005-09-01), Calderbank et al.
Ezio Biglieri, Dariush Divsalar, Peter J. McLane and Marvin K. Simon; “Introduction to Trellis-Coded Modulation with Application”; Mar. 1995; pp. 121-125.
Vahid Tarokh, Nambi Seshadri, A.R. Claderbank; “Space-Time Codes for High Data Rate Wireless Communication: Performance Criterion and Code Construction”; Mar. 1998; IEEE Transactions on Information Theory, vol. 44, No. 2; pp. 744-765.
Abbas Yougacoglu, Mohamed Siala; “Space-Time Codes for Fading Channels”; IEEE 1999; pp. 2495-2499.
Welly Firmanto, Branka S, Vucetic, Jinhong Yuan; “Space-Time TCM with Improved Performance on Fast Fading Channels”; Apr. 2001; IEEE Communications Letters, vol. 5, No. 4; pp. 154-156.
Hwang Chan-Soo
Whang Keum-Chan
Fan Chieh M.
Samsung Electronics Co,. Ltd.
The Farrell Law Firm P.C.
Tu Julia P
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