The document discusses different media access control (MAC) methods for wireless networks and their motivations. It describes that carrier sense multiple access with collision detection (CSMA/CD) used in fixed networks does not work well in wireless due to signal strength decreasing with distance and half-duplex radios. This can cause the "hidden terminal" and "exposed terminal" problems. It then introduces MACA, which uses request-to-send and clear-to-send packets to avoid collisions for hidden terminals. The document also discusses frequency division multiple access (FDMA), time division multiple access (TDMA), code division multiple access (CDMA), space division multiple access (SDMA), and their characteristics.
16. CDMA Encode / Decode One Sender Interference Master Deenanath Mangeshkar college Aurad[sha] Prof. Shingare A. A.
17. CDMA Encode / Decode Two Sender Interference Master Deenanath Mangeshkar college Aurad[sha] Prof. Shingare A. A.
18. Relationship Code used in CDMA Master Deenanath Mangeshkar college Aurad[sha] Prof. Shingare A. A.
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20. [Global System For Mobile Communication] Through the evolution of cellular telecommunications. Various System have Been Developed without the benefit Of the standardized specification. This presented Many problem directly related to Compatibility, especially with the development of digital radio technology. The GSM Standards is intended to address these problems. From 1982 to 1985 discussions were held to decide between buildings an Analogs or digital system. After multiple field tests. A digital system was adopted for GSM. Master Deenanath Mangeshkar college Aurad[sha] Prof. Shingare A. A.
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