US 9,374,161 B2Granted

System and method for satellite link budget analysis (LBA) optimization

AssigneeComtech EF Data Corp.

InventorsMichael Beeler, Vasile Manea, Joshua Bolick

Life of this patent

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Abstract

A method of optimizing a link budget analysis comprising performing a first LBA based on a target modulation and coding pair (MODCOD), the MODCOD having a symbol energy to noise density ratio (Es/No), a target setting of a power amplifier, or a target antenna size, determining an excess margin and increasing or decreasing a maximum available MODCOD accordingly, iteratively performing a second LBA, calculating a ratio of allocated bandwidth to PEB and adjusting at least one of the MODCOD, amplifier power, and antenna size, summing a contribution to a final ratio of allocated bandwidth to PEB of the plurality of communications links, accessing a look up table and selecting a new MODCOD or adjusting the amplifier size or antenna size is based on the ratio of allocated bandwidth to PEB and altering one or more transmission or receiving parameters to apply the optimal MODCOD, amplifier size, or antenna size.

Claims20

Dependent claims

A method of optimizing a link budget analysis (LBA) for a communications link within a communications system having a plurality of communications links comprising:

performing, using a processor, a first LBA based on a target modulation and coding pair (MODCOD) that is selected based on one or more transmission or receiving link parameters, the MODCOD having at least one of a predetermined symbol energy to noise density ratio (Es/No), a target setting of a power amplifier, and a target antenna size;
determining, by the processor, an excess margin from the first LBA and increasing or decreasing a maximum available MODCOD based on whether the excess margin has a positive or a negative value;
performing, by the processor, a second LBA using the increased or decreased maximum MODCOD and iteratively repeating increasing or decreasing the maximum available MODCOD and performing a subsequent LBA using the increased or decreased maximum available MODCOD;
calculating, by the processor a ratio of allocated bandwidth to a power equivalent bandwidth (PEB) and adjusting at least one of the MODCOD, amplifier power, and antenna size based on the calculated ratio;
determining, by the processor, whether additional energy is present in the communications link by summing a contribution to a final ratio of allocated bandwidth to PEB of the communications system made by each of the plurality of communications links;
accessing a look up table (LUT) to determine an optimal MODCOD for the communications link wherein at least one of the following actions is performed by the processor:
if the sum is a positive value, selecting a MODCOD having a higher Es/No;
or
if the sum is a negative value, selecting a MODCOD having a lower Es/No;
or
adjusting the amplifier size or antenna size is based on the ratio of allocated bandwidth to PEB;
and
altering one or more transmission or receiving parameters to apply the selected optimal MODCOD, amplifier size, or antenna size.

10 more elements

A system for optimizing a link budget analysis (LBA) for a communications link within a communications system having a plurality of communications links comprising:

a transmitter configured to transmit a communications signal;
a receiver configured to receive the communications signal and create a communications link between the transmitter and receiver, the receiver and transmitter located remotely from each other;
and
a processor configured to:
perform a first LBA based on a target modulation and coding pair (MODCOD) that is selected based on one or more transmission or receiving link parameters, the MODCOD having at least one of a predetermined symbol energy to noise density ratio (Es/No), a target setting of a power amplifier, and a target antenna size;
determine an excess margin from the first LBA and increase or decrease a maximum available MODCOD based on whether the excess margin has a positive or a negative value;
perform a second LBA using the increased or decreased maximum MODCOD;
iteratively repeat increasing or decreasing the maximum available MODCOD and perform a subsequent LBA using the increased or decreased maximum available MODCOD;
calculate a ratio of allocated bandwidth to a power equivalent bandwidth (PEB) and adjust at least one of the MODCOD, amplifier power, and antenna size based on the calculated ratio;
determine whether additional energy is present in the communications link by summing a contribution to a final ratio of allocated bandwidth to PEB of the communications system made by each of the plurality of communications links;
access a look up table (LUT) to determine an optimal MODCOD for the communications link and perform at least one of the following actions:
if the sum is a positive value, a MODCOD having a higher Es/No is selected;
or
if the sum is a negative value, a MODCOD having a lower Es/No is selected;
or
the amplifier size or antenna size is adjusted based on the ratio of allocated bandwidth to PEB;
and
alter one or more transmission or receiving parameters to apply the selected optimal MODCOD, amplifier size, or antenna size.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/263,888Filed 28 Apr 2014 · continuation in part
Priority: 21 Nov 2013
Published: US 2014/0160970 A121 Aug 2014
Granted: 21 Jun 2016
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H04B 10/118
Arrangements specific to free-space transmission, i.e. transmission through air or vacuum: specially adapted for satellite communication
H04B 7/18513
Systems using a satellite or space-based relay: transmission in a satellite or space-based system
H04B 7/18519
Systems using a satellite or space-based relay: operations control, administration or maintenance
H04B 7/18543
Arrangements for managing radio, resources, i.e. for establishing or releasing a connection: for adaptation of transmission parameters, e.g. power…

Family

Application61/907,305Us provisional application · filed 21 Nov 2013
Application14/179,764Parent of this continuation-in-part · filed 13 Feb 2014
US 2014/0233611 A1Pre-grant publication · published 21 Aug 2014
US 2014/0160970 A1Published application
US 9,178,607 B2Related patent
US 9,374,161 B2This patent

From the US filing history. Foreign family members aren’t listed.