Extending the Capacity of Multiple Access Channels
- Topics:
- Electrical and Electronic
- Tags:
- CDMA,
- Cellular Phones,
- Class,
- Consumer Electronics,
- Microsoft Access,
- Personal Technology,
- Productivity,
- TDMA,
- Technique
- Source:
- Ghent University
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Overview: Multiple access techniques which allow sharing a communication medium between different users represent one of the most challenging topics in digital communications. There are two distinct classes of multiple access techniques: The first class includes the well-known frequency-division multiple access (FDMA), time-division multiple access (TDMA), and orthogonal code-division multiple access (OCDMA). The second class includes code-division multiple access with pseudo-noise spreading sequences. This paper, after reviewing the capacity limits of existing multiple access techniques, describes some newly introduced concepts which allow accommodating N users without any interference while also accommodating additional users at the expense of some signal-to-noise ratio (SNR) penalty.
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Format: PDF | Size: 85KB | Date: Sep 2001 | Pages: 20
