Method and apparatus to increase optic line capacity
AssigneeNokia Solutions and Networks Oy
InventorsTomas Sanjuan Flores, Alfonso Fernandez Duran
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Abstract
The method may include receiving coded data symbols based on data bits of an input binary data stream. For example, each of the coded data symbols may have a symbol duration of a type in relation to a bit duration of the input binary data stream. Moreover, the method may include comparing the symbol duration of the coded data symbols. The method may also include converting said coded data symbols into a transformed symbol sequence. Additionally, the method may further include generating an output signal based on the transformed symbol sequence for transmission in the communication system.
Claims15
A method for transmitting data in a communication system, comprising:
- receiving coded data symbols based on data bits of an input binary data stream, each of the coded data symbols having a symbol duration of a type in relation to a bit duration of the input binary data stream;
- comparing the symbol duration of the coded data symbols;
- converting said coded data symbols into a transformed symbol sequence by,
- eliminating one or more of the coded data symbols if a corresponding symbol duration is shorter than or equal to a predefined bit duration, and
- maintaining one or more of the coded data symbols if a corresponding symbol duration is longer than the predefined bit duration;
- and
- generating an output signal based on the transformed symbol sequence for transmission in the communication system.
A method for receiving information data in a communication system, the data being carried by a multilevel signal, the method comprising:
- receiving and sampling the multilevel signal;
- translating an amplitude of said multilevel signal into a level index based on level threshold crossing detection;
- generating a first multilevel symbol sequence by eliminating a signal level transition within a duration;
- generating a second multilevel symbol sequence by eliminating one or more symbols from said first multilevel symbol sequence if a corresponding symbol duration of said one or more symbols is shorter than a threshold duration;
- and
- applying multilevel decoding to said second multilevel symbol sequence for obtaining the information data.
An apparatus for transmitting data in a communication system, comprising:
- at least one memory configured to store instructions;
- and
- at least one processor configured to execute the instructions and cause the apparatus to perform,
- receiving coded data symbols based on data bits of an input binary data stream, each of the coded data symbols having a symbol duration in relation to a bit duration of the input binary data stream;
- comparing the symbol duration of the coded data symbols;
- converting said coded data symbols into a transformed symbol sequence, said coded data symbols being converted into the transformed symbol sequence by,
- eliminating one or more of the coded data symbols if a corresponding symbol duration is shorter than or equal to a predefined bit duration, and
- maintaining one or more of the coded data symbols if a corresponding symbol duration is longer than the predefined bit duration;
- and
- generating an output signal based on the transformed symbol sequence for transmission in the communication system.
An apparatus for receiving information data in a communication system, the data being carried by a multilevel signal, comprising:
- at least one memory configured to store instructions;
- and
- at least one (processor configured to execute the instructions and cause the apparatus to perform,
- receiving and sampling the multilevel signal;
- translating an amplitude of said multilevel signal into a level index based on level threshold crossing detection;
- generating a first multilevel symbol sequence by eliminating a signal level transition within a duration;
- generating a second multilevel symbol sequence by eliminating one or more symbols from said first multilevel symbol sequence if a corresponding symbol duration of said one or more symbols is shorter than a threshold duration;
- and
- applying multilevel decoding to said second multilevel symbol sequence for obtaining the information data.
Dependencies are inferred from the claim text.