Searching for authors named "Giuseppe Caire" – sorted by Relevance.
17 documents found, showing 1 through 10.
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Weighted RLS Channel Estimators for DS/CDMA Signals in Multipath
- …Channel estimation and equalization is explored in the context of Direct-Sequence/Code-Division Multiple-Access signals transmitted through multipath channels. The focus is on adaptive and recursive methods which exploit pilot symbols or pilot signals, resulting in algorithms which are alternatively…
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Training Sequence-Based Multiuser Channel Estimation for Block-Synchronous CDMA
- …Uplink channel estimation for a block-synchronous chip-asynchronous CDMA system as proposed for the time-division duplex (TDD) option of 3rd generation cellular systems is considered. Training midambles are employed for joint channel estimation of all users. An unstructured approach based on modelin…
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Training Sequence Design for Adaptive Equalization of Multi-user Systems
- …Preliminary work on training sequence design for block adaptive channel estimation methods for multi-user DirectSequence /Code-Division Multiple-Access (DS/CDMA) systems is provided. The focus is on linear minimum-mean squared error estimation methods. First, a joint channel estimation scheme is con…
- Cited by 2 (0 self) – Add To MetaCart
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Co-channel interference in cellular mobile radio systems with coded PSK and diversity
- …In this paper, the performance of coding and diversity in narrowband wireless cellular systems affected by fading, shadowing and co-channel interference is analyzed. We consider low-order diversity, that can be practically realized for both coherent and differential phase shift keying. We assume tha…
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Modulation and Coding for the Gaussian Collision Channel
- …We study signal-space coding for coherent slow frequency -hopped communications over a Gaussian multiple-access collision channel (G-MACC). We define signal sets and interleavers having maximum collision resistance. The packet-error probability and the spectral efficiency obtained by these signal se…
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A Multi-User Approach to Narrowband Cellular Communications
- …We compare three receivers for coded narrowband transmission over a channel with fading, shadowing, and co-channel interference. The baseline receiver includes conventional diversity reception with maximal-ratio combining. A multi-user approach allows us to derive a maximum-likelihood (ML) multi-use…
- Cited by 9 (0 self) – Add To MetaCart
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"Turbo" Decoding with Unequal Error Protection applied to GSM speech coding
- …Two-dimensional, systematic and parallel concatenated convolutional codes are compatibly punctured in order to provide unequal error protection (UEP). They are iteratively decoded by the MAP algorithm and other soft-in/soft-out decoders. In a case study we replace the current GSM speech channel codi…
- Cited by 6 (1 self) – Add To MetaCart
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Initial Synchronization of DS-CDMA via Bursty Pilot Signals
- …We consider initial timing acquisition in DS-CDMA when propagation is affected by multipath and fading and where the base-station broadcasts a synchronization pilot signal in the form of bursts of modulated chips transmitted periodically and separated by long silent intervals. Subject to certain …
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Iterative Multiuser Joint Decoding: Optimal Power Allocation and Low-Complexity Implementation
- …We consider a canonical model for coded CDMA with random spreading, where the receiver makes use of iterative Belief-Propagation (BP) joint decoding. We provide simple Density-Evolution analysis in the large-system limit (large number of users) of the performance of the exact BP decoder and of so…
- Cited by 15 (1 self) – Add To MetaCart
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Transmission and Reception Front-End Algorithms for Software Defined Radio
- …We present low-complexity algorithms for transmitter and receiver front-end suited to the implementation of software defined radio (SDR) terminals. The proposed algorithms make the processing sampling frequency independent of the symbol rate of the digitally modulated signal and use the "IF-sampl…
- Cited by 2 (2 self) – Add To MetaCart
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