Quasi-synchronous code-division multiple access with high-order modulation.

Code-division multiple access (CDMA) is a multiplexing technique where a number of users simultaneously access a transmission channel by modulating and spreading their signals with preassigned codewords. This paper studies the performance of CDMA signals with orthogonal (Walsh-Hadamard) codewords an...

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Publicat a:	IEEE Transactions on communications 49, 7 (2001).
Autor principal:	Van Houtum, W.J
Format:	Article
Idioma:	English
Matèries:	BER. CDMA. M-PSK. M-QAM. M-level phase-shift keying. M-level quadrature amplitude modulation. Walsh-Hadamard code set. Walsh-Hadamard codewords. Bit-error rate. Cable TV networks. High-order modulation. Interference noise. Multiplexing technique. Performance. Preassigned codewords. Quasi-synchronous code-division multiple access. Received user signal. Return channel. Synchronization errors. Transmission channel.