B019013 - WIRELESS COMMUNICATIONS

Italian language. The course will be held in English at the request of students

3G,4G,5G standards for cellular systems. Standards WLAN e WPAN

[1] R. Steele: Mobile radio communications. Pentech Press, London, 1992.
[2] D. Parsons: The mobile radio propagation channel. Pentech Press, London, 1992.
[3] J. G. Proakis: Digital communications. McGraw-Hill International Editions, II Ed., 1992.
[4]C. Smith, D. Collins, "Comunicazioni Wireless 3G", Mc Graw Hill Companies, Publishing Group Italia, Milano, 2002.
[5] O. Andrisano, D. Dardari, "Sistemi di Telecomunicazioni : elementi di progetto di sistemi radiomobili", Ed. Progetto Leonardo, Bologna,2001.
[6]T. S. Rappaport, "Wireless Communications : Principles and Practice", Prentice Hall, IEEE Press, NJ, 1996.
[7] H.Holma, A.Toskala "WCDMA for UMTS" Wiley 2001
[8]D.Tse, P.Viswanath "Fundamentals of wireless communication" Cambridge University 2005
[9]Andreas Molish Editor: Wideband Wireless Digital Communications, Prentice Hall PTR, 2001
[10]Andrea Goldsmith :Wireless Communications - Cambridge Univ. Press 2005
[11]W. Stallings - Wireless Communications and Networks, Prentice Hall Ed., 2005
[12]Stefania Sesia, Issam Toufik, Matthew Baker "LTE the UMTS long term evolution : from theory to practice" Wiley 2011
[13]Harri Holma and Antti Toskala "LTE for UMTS: Evolution to LTE-Advanced" Wiley (Apr 25, 2011)
[14] Farooq Khan " LTE for 4G Mobile Broadband: Air Interface Technologies and Performance" Cambridge University 2009
[15] Slides are available on Moodle platform by UNIFI
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lessons

Slides are available on the Moodle platform by University of Florence

1. Introduction to Wireless Communications.
Multiple access techniques: FDMA, TDMA, CDMA, OFDM,SDMA
Coverage and capacity concepts: the cell geometry and the cluster, and the reuse of frequencies.
The planning of a cellular network.
Roaming
The concept of handover and mobility; soft handover.
2. The second-generation cellular systems and their evolution (2G and 2.5G);
The GSM system: the physical channels, logical channels, formats, radio interface.
The GPRS system architecture, core network, radio access
The EDGE system and IS-95
3. The third-generation cellular systems (3G):
Introduction: Scenario, classes of service, network architecture
Overview of the standardization process for WCDMA in Japan, Korea, United States (CDMA2000) up to the 3GPP
Overview of 3G (IMT-2000)
The UMTS system:
Radio interface: UTRA, UTRA TDD, UTRA FDD (WCDMA)
The specific 3GPP. Physical Layer: user data transmission, spreading sequences , signaling channels.
Resource Management: Power control, handover, admission control.
MAC Architecture: Mapping between logical channels and transport channels, examples of data stream, radio link control protocol, packet data convergence protocol, broadcast / multicast control protocol, radio re-source control protocol.
Managment of the radio access and the call in CS. PDP context in PS. IP Multimedia Service.
The HSDPA system
Elements of the design of third generation cellular networks.
Principles for design and evaluation of the link capacity and coverage planning also considering co-channel interference
Phenomenon of Cell Breathing

4. 4 Generation Systems 'all-IP'
Key Features: OFDM, MIMO and multi-user MIMO, Turbo coding, software defined radio, relaying operational concepts

Systems pre-4G: WiMAX and WiBro (short)
WiMAX (IEEE802.16)
Scalable OFDMA
TDD frame structure with downlink and uplink traffic asymmetric.
Adaptive modulation and coding.

LTE Long Term Evolution
System architecture and protocols. DL and UL Access. Frame and slot structures. Multicast broadcast system.

5. Space division multiple access (SDMA) in mobile communications
Adaptive beamforming: improvement of the BER with fading, co-chanel and interference multiple users reduction, performance in CDMA systems
Multiple antenna systems (MIMO).
The MIMO channel: capacity through Singular Value Decomposition, rank and condition number of the matrix channel.
MIMO fading channels models: beyond the capacity limit of Shannon.
Space-time diversity techniques: algorithms and Alamouti 2x2 Alamouti in hybrid MIMO Rayleigh channel
Spatial multiplexing techniques: algorithm VBLAST. Receiver architectures. CDMA multiuser detection with connections and equalization.
Implementation in 3GPP and WiMAX.
Use of multiple antenna systems for services based on navigation and location (Location Based Services).

7. The main standards and technologies in the consumer market:
WPAN
RFID
.1 IEEE 802.15 (Bluetooth)
characteristics, applications, power levels and coverage, control of the means of transmission, standardization activities, modes of operation; piconet and scatternet
IEEE 802.15.3 (UWB)
characteristics, types of pulses, of variable length frames, modulations, short range, indoor channels. Comparisons with high-rate WLAN standard.
IEEE 802.15.4 (ZigBee)
Specifications of the PHY layer and MAC

WLAN
IEEE 802.11
IR technologies. RF Technologies Spread Spectrum (FHSS and DSSS) and OFDM. Comparison between IEEE 802.11b and 802.11a: frequency bands, bit rates, modulation techniques. Channels and frequency planning. The evolution to the standard IEEE 802.11g
UMTS-WLAN integration scenarios defined within the 3GPP