{"id":44667,"date":"2021-07-23T08:17:56","date_gmt":"2021-07-23T05:17:56","guid":{"rendered":"https:\/\/researcherstore.com\/product\/peak-to-average-power-ratio-papr-reduction-techniques-in-ofdm-systems-with-matlab-codes\/"},"modified":"2022-05-24T21:06:54","modified_gmt":"2022-05-24T18:06:54","slug":"papr-ofdm-codes","status":"publish","type":"product","link":"https:\/\/researcherstore.com\/product\/papr-ofdm-codes\/","title":{"rendered":"Codes of 7 Peak-to-Average Power Ratio (PAPR) reduction techniques in OFDM systems with MATLAB CODES"},"content":{"rendered":"

The downloadable file contains the MATLAB CODES, which enable the implementation of the most commonly used Peak-to-Average Power Ratio (PAPR<\/a>) reduction techniques in OFDM-based systems.<\/strong><\/p>\n

========== About PAPR Reduction ===========<\/b><\/b><\/h3>\n

The transmit signals in an OFDM system can have high peak values in the time domain since <\/b>many subcarrier components are added via an IFFT operation. Therefore, OFDM systems are <\/b>known to have a high PAPR<\/a> (Peak-to-Average Power Ratio<\/a>), compared with single-carrier <\/b>systems. In fact, the high PAPR is one of the most detrimental aspects of the OFDM system, as it <\/b>decreases the SQNR (Signal-to-Quantization Noise Ratio) of ADC (Analog-to-Digital Con<\/b>verter) and DAC (Digital-to-Analog Converter) while degrading the efficiency of the power <\/b>amplifier in the transmitter. The PAPR problem is more important in the uplink since the <\/b>efficiency of the power amplifier is critical due to the limited battery power in a mobile terminal.<\/b><\/p>\n

In general, even linear amplifiers impose a nonlinear distortion on their outputs due to their <\/b>saturation characteristics caused by an input much larger than its nominal value. <\/b> Due to the aforementioned saturation characteristic of the <\/b>amplifier, the maximum possible output is limited by Pmax_<\/b>out when the corresponding input power <\/b>is given by Pmax_<\/b>in. Thus, the input power must be backed off so as to operate <\/b>in the linear region. Therefore, the nonlinear region can be described by IBO (Input Back-Off) <\/b>or OBO (Output Back-Off).<\/b><\/p>\n

Note that the nonlinear characteristic of HPA (High Power Amplifier), excited by a large <\/b>input, causes the out-of-band radiation that affects signals in adjacent bands, and in-band <\/b>distortions that result in rotation, attenuation, and offset on the received signal.<\/b>\u00a0<\/strong><\/p>\n

\"\"<\/p>\n

\"PAPR\"
PAPR<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

The downloadable file contains the MATLAB CODES, which enable the implementation of the most commonly used Peak-to-Average Power Ratio (PAPR) reduction techniques in OFDM-based systems.<\/strong><\/p>\n","protected":false},"featured_media":771,"template":"","meta":{"qubely_global_settings":"","qubely_interactions":"","pmpro_default_level":""},"product_cat":[46,50],"product_tag":[299,151,325],"_links":{"self":[{"href":"https:\/\/researcherstore.com\/wp-json\/wp\/v2\/product\/44667"}],"collection":[{"href":"https:\/\/researcherstore.com\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/researcherstore.com\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/researcherstore.com\/wp-json\/wp\/v2\/media\/771"}],"wp:attachment":[{"href":"https:\/\/researcherstore.com\/wp-json\/wp\/v2\/media?parent=44667"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/researcherstore.com\/wp-json\/wp\/v2\/product_cat?post=44667"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/researcherstore.com\/wp-json\/wp\/v2\/product_tag?post=44667"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}