Microwave analog signal processing: Difference between revisions

Revision as of 03:09, 9 November 2024

Revision as of 16:23, 7 December 2024

Line 25:

|-

|

|RADAR<ref>{{Citation |lastlast1=Melvin |firstfirst1=William L. |title=Overview: Advanced Techniques in Modern Radar |date=2012-01-01 |work=Principles of Modern Radar: Advanced techniques |pages=1–16 |url=http://dx.doi.org/10.1049/sbra020e_ch1 |access-date=2024-10-27 |publisher=Institution of Engineering and Technology |isbn=978-1-891121-53-1 |last2=Scheer |first2=James|doi=10.1049/sbra020e_ch1 }}</ref>

|

|}

Line 62:

'''Dispersion-code Multiple Access (DCMA):'''

Dispersion Code Multiple Access (DCMA) is an innovative patented<ref>{{Cite patent|number=WO2015179949A1|title=A method and apparatus for encoding data using instantaneous frequency dispersion|gdate=2015-12-03|invent1=NIKFAL|invent2=Caloz|invent3=SALEM|inventor1-first=Babak|inventor2-first=Christophe|inventor3-first=Mohamed Ahmed|url=https://patents.google.com/patent/WO2015179949}}</ref> communication technique<ref>{{Cite book |lastlast1=Cooklev |firstfirst1=Todor |url=http://dx.doi.org/10.3998/mpub.14428518 |title=Modern Communications Systems: A First Course |last2=Yagle |first2=Andrew |date=2024 |publisher=Michigan Publishing |doi=10.3998/mpub.14428518 |isbn=978-1-60785-848-5}}</ref> that leverages Chebyshev polynomials to encode and transmit multiple data streams over a shared medium. Each data input, consisting of impulses, is encoded using a distinct Chebyshev polynomial order to create unique dispersive frequency patterns. This encoding ensures that the signals are sufficiently dispersed and distinguishable, allowing multiple users or data streams to coexist without interference. The encoded signals are then transmitted simultaneously through a common channel.

At the receiver, the system applies an inverse Chebyshev response, acting as a dispersive delay structure to decode and recover each individual data stream. This precise decoding process ensures that even weak signals, potentially buried below the noise level, can be accurately recovered, making the technique highly robust against noise and interference. DCMA offers an efficient and reliable method for multiple access communication, suitable for applications requiring strong noise immunity and optimal spectrum utilization, such as IoT networks, wireless communication, and secure data transfer.