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This paper compare the throughput performance of a carrier-sense multiple access (CSMA) scheme that uses an orthogonal frequency division multiple access (OFDM) physical layer and a CDMA slotted ALOHA scheme based on multicarrier CDMA (MC-CDMA) in inter-vehicle communication (IVC). In particular, we compare the throughputs in a situation where a hidden terminal is no longer negligible. We encounter...
Pulse-shaping OFDM is well-known that it performs well in a mobile environment comparing with conventional OFDM. However, in highly mobile environment intersymbol and intercarrier interferences (ISI/ICIs) increase and can no longer be neglected. These ISI/ICIs deteriorate the performance of the systems. Practically, proper channel equalization and estimation are needed for further improvement of the...
A 3.1-to-9.5GHz UWB transceiver is implemented in 90nm CMOS technology. It includes a 12-band synthesizer and wideband TX/RX chains operating from a 1.1V supply. The transceiver provides a TX0IP3 of 7.2 to 8.6dBm, an RX gain of 58 to 64dB, and a NF of 6.3 to 7.8dB across 12 bands
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