COMMUNICATIONS SYSTEM USING ADAPTIVE BASEBAND INJECTED PILOT CARRIER SYMBOLS AND RELATED METHOD
First Claim
Patent Images
1. A system for communicating, comprising:
- a transmitter comprising,an encoder and baseband modulator that encodes and modulates a sequence of payload data symbols as a signal constellation to be communicated;
an amble generator and baseband modulator that generates amble symbols as a known sequence of M symbol times in length every N symbol times;
a multiplexer that multiplexes the data and amble symbols together to form a communications signal that is transmitted over a communications channel; and
a receiver that receives the communications signal and separates the data symbols from the amble symbols and determines performance metrics such that said transmitter either increases or decreases at least one of the length of the amble or frequency of ambles to bring a performance metric above or below a threshold without changing a symbol rate.
1 Assignment
0 Petitions
Accused Products
Abstract
A system, method and apparatus includes a transmitter that has an encoder and baseband modulator that encodes and modulates a sequence of payload data symbols as a signal constellation to be communicated. An amble generator and baseband modulator generates amble symbols as a known sequence of M symbol times in length every N symbol times. A multiplexer multiplexes the data and amble symbols together to form a communications signal that is transmitted over a communications channel.
-
Citations
28 Claims
-
1. A system for communicating, comprising:
-
a transmitter comprising, an encoder and baseband modulator that encodes and modulates a sequence of payload data symbols as a signal constellation to be communicated; an amble generator and baseband modulator that generates amble symbols as a known sequence of M symbol times in length every N symbol times; a multiplexer that multiplexes the data and amble symbols together to form a communications signal that is transmitted over a communications channel; and a receiver that receives the communications signal and separates the data symbols from the amble symbols and determines performance metrics such that said transmitter either increases or decreases at least one of the length of the amble or frequency of ambles to bring a performance metric above or below a threshold without changing a symbol rate. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. An apparatus for transmitting a communications signal, comprising:
-
an encoder and baseband modulator that encodes and modulates a sequence of payload data symbols as a signal constellation to be communicated; an amble generator and baseband modulator that generates amble symbols as a known sequence of M symbol times in length every N symbol times; and a multiplexer that multiplexes the data and amble symbols together to form a communications signal that is transmitted over a communications channel such that at least one of the length of the amble or frequency of ambles are decreased or increased to bring a performance metric above or below a given threshold without changing a symbol rate. - View Dependent Claims (10, 11, 12, 13, 14)
-
-
15. A method for communicating, which comprises:
-
generating a sequence of payload data symbols as a signal constellation to be communicated; multiplexing the sequence of data symbols with amble symbols as a known training sequence of M symbol times in length every N symbol times to form a communications signal that is transmitted along a communications channel; and either increasing or decreasing at least one of the length of the amble or frequency of ambles based on monitored performance metrics of the communications channel to bring a performance metric above or below a given threshold without changing a symbol rate. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
-
Specification