Simple Transmit Diversity Techniques for Wireless Communications
| Autor: | Tipparti Anil Kumar, K. S. Ramesh, Kommabatla Mahender |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Signal processing
Computer science business.industry ComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKS MIMO Data_CODINGANDINFORMATIONTHEORY symbols.namesake Transmit diversity Additive white Gaussian noise Wireless broadband Computer Science::Networking and Internet Architecture symbols Electronic engineering Wireless business Multipath propagation Computer Science::Information Theory Rayleigh fading |
| Zdroj: | Smart Innovations in Communication and Computational Sciences ISBN: 9789811089671 |
| DOI: | 10.1007/978-981-10-8968-8_28 |
| Popis: | Multipath fading encountered in time-varying channel renders wireless communications highly non-reliable. To obtain an average bit-error rate of 10−3 using BPSK modulation with coherent detection, performance degradation due to Rayleigh fading can account for a SNR of 15 dB higher than in AWGN [1]. This paper is limited to the review of several study cases of MISO configuration where suitable coding or signal processing techniques are exploited to allow the extraction of transmit diversity without channel knowledge at the receiver. If the subchannels associated with transmit antennas have independent fades, the order of diversity is proven to be equal to the number of transmit antennas. This approach is attractive in public broadcasting systems such as cellular (for voice) or broadband wireless access (for data communications) to keep the subscriber-side equipment cost down with simpler hardware requirement and more compact form factor by avoiding the implementation of several receive antennas. |
| Databáze: | OpenAIRE |
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