Patent SG-11201810858Q-A (SG)
Title: Systems and methods for signal cancellation in satellite communication
Inventor: POTTER ROBERT
IPC: H04B1/7103
Filed: 2017-07-14
Abstract: FIG. 10 RECEIVING ONE OR MORE SECONDARY INPUTS FOR INTERFERENCE REDUCTION ADJUST SECONDARY SIGNALS FOR GAIN AND PHASE BASED ON FEEDBACK FROM REDUCED INTERFERENCE SIGNAL 740 746 CANCELLING UNDESIRED SIGNALS 742 r 744 r 760 OUTPUTTING MULTIPLE SEPARATED SIGNALS HAVING A REDUCED NOISE FLOOR REGENERATING THE SIGNALS BASED ON SYMBOL TRAJECTORY, SHAPING FACTOR, MODULATION TYPE, PHASE OFFSET AND FREQUENCY OFFSET W O 20 18/0 139 19 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 18 January 2018 (18.01.2018) WIPO I PCT omit IIl °nolo III m 01111°111E11 oimIE (10) International Publication Number WO 2018/013919 Al (51) International Patent Classification: HO4B 1/10 (2006.01) HO4B 7/185 (2006.01) HO4B 1/7103 (2011.01) HO4L 27/00 (2006.01) HO4B 1/7107 (2011.01) H04B 17/345 (2015.01) (21) International Application Number: PCT/US2017/042132 (22) International Filing Date: 14 July 2017 (14.07.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 62/362,487 14 July 2016 (14.07.2016) US 15/649,408 13 July 2017 (13.07.2017) US (71) Applicant: KRATOS INTEGRAL HOLDINGS, LLC [US/US]; 4820 Eastgate Mall, Suite 200, San Diego, Cali- fornia 92121 (US). (72) Inventors: POTTER, Robert; 4820 Eastgate Mall, Suite 200, San Diego, California 92121 (US). DAUGHTRIDGE, Stuart; 4820 Eastgate Mall, Suite 200, San Diego, Califor- nia 92121 (US). (74) Agent: BERNSEN, Eric A. et al.; c/o Procopio, Cory, Har- greaves & Savitch, 525 B Street, Suite 2200, San Diego, California 92101 (US). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). (54) Title: SYSTEMS AND METHODS FOR SIGNAL CANCELLATION IN SATELLITE COMMUNICATION (57) : The disclosure provides systems and methods for interference re- duction in wireless communications. The method can include receiving a com- posite signal having multiple overlapping constituent signals and a noise floor. The noise floor can have at least one interfering coherent signal. The system can characterize and synthesize the multiple overlapping constituent signals without a priori know. The method can include receiving a secondary input comprising the 730 at least one interfering coherent signal. The method can include canceling the in- terfering coherent signal from the noise floor. The method can include outputting the first signal and the second signal having a reduced noise floor. [Continued on next page] 00, r 710 RECEIVING AN INPUT COMPRISING MULTIPLE SIGNALS: ONE OR MORE DESIRED SIGNALS AND INTERFERING SIGNAL(S) r 720 DETECTING INTERFERING SIGNALS, DETERMINE SYMBOL RATE AND MODULATION ESTIMATE 1 APPLYING AN ADAPTIVE EQUALIZER AT X TIMES THE SYMBOL RATE OF THE INDIVIDUAL SIGNALS TO DETERMINE SYMBOL TRAJECTORY, SHAPING FACTOR, MODULATION TYPE PHASE OFFSET. AND FREQUENCY OFFSET WO 2018/013919 Al MIDEDIMOHNOBEIENIRMI111111111111111101111111111111111111 Published: — with international search report (Art. 21(3))