Deprecated: Constant E_STRICT is deprecated in /opt/webspace/irweb/private/sys/core/Exceptions.php on line 76

A PHP Error was encountered

Severity: 8192

Message: Service_model::get_smb(): Optional parameter $user declared before required parameter $level is implicitly treated as a required parameter

Filename: models/Service_model.php

Line Number: 272

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 9
Function: __construct

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Service_model::get_allsmb(): Optional parameter $user declared before required parameter $level is implicitly treated as a required parameter

Filename: models/Service_model.php

Line Number: 299

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 9
Function: __construct

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: Undefined array key "HTTP_ACCEPT_LANGUAGE"

Filename: controllers/Pub.php

Line Number: 18

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 18
Function: _error_handler

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: substr(): Passing null to parameter #1 ($string) of type string is deprecated

Filename: controllers/Pub.php

Line Number: 18

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 18
Function: substr

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property Menu::$level is deprecated

Filename: mysqli/mysqli_result.php

Line Number: 230

Backtrace:

File: /opt/webspace/irweb/private/app/models/Service_model.php
Line: 277
Function: custom_result_object

File: /opt/webspace/irweb/private/app/models/Service_model.php
Line: 258
Function: get_smb

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 326
Function: get_usermenu

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$load is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$user is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$benchmark is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$hooks is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$config is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$log is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$utf8 is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$uri is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$router is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$output is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$security is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$input is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$lang is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$db is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$session is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$encryption is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$users is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$service is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

A PHP Error was encountered

Severity: 8192

Message: Creation of dynamic property CI_Loader::$macs is deprecated

Filename: core/Loader.php

Line Number: 932

Backtrace:

File: /opt/webspace/irweb/private/app/controllers/Pub.php
Line: 377
Function: view

File: /opt/webspace/irweb/public/index.php
Line: 290
Function: require_once

Institute of Radiocommunications - Poznan University of Technology

Fairspectrum Oy

Institute of Radiocommunications and Fairspectrum Oy from Finland conduct joint investigation on dynamic spectrum access methods that aim at increase the overall spectral efficiency in future wireless systems. Fruitful collaboration done in recent joint projects, including H2020 COHERENT project, resulted in development of advanced spectrum sharing algorithms between various stakeholders, mainly telecommunications operators, that utilize rich context information about vicinity. Selected solutions have been also verified during hardware measurements and experiments conducted in real networks, mainly in Poland, in Greece and recently in Finland. These constitute the examples of practical implementation of the cognitive radio paradigm.