[...]... description of how cross- layer scheduling is applied in UMTS (W-CDMA) systems for packet-switched data users Part 3 Chapter 10 discusses an advanced topic of cross- layer adaptive scheduling design for wideband systems Both DS-CDMA and OFDM are promising physical layer technologies for dealing with wideband multipath channels We shall compare and contrast the multiuser performance of the cross- layer designs based... Scheduling Design for DS-CDMA/MISO and OFDMA/MISO Systems 397 10.3.1 Cross- Layer Design for DS-CDMA/MISO Systems 398 10.3.2 Cross- Layer Design for OFDMA/MISO Systems 398 10.4 Performance Comparisons of DS-CDMA- and OFDM-Based Systems 400 10.4.1 Performance of DS-CDMA/MISO Systems 401 10.4.2 Performance of OFDMA/MISO Systems 401 10.4.3 Comparisons of DS-CDMA/MISO and OFDMA/MISO Systems 404 10.5 Implementation... transmitter without feedback approach to elaborate on the adaptive physical layer design and adaptive MAC layer design as well as adaptive routing layer design combined with multiple antenna technologies Multiple- Antenna Technologies In point-to-point wireless links, the primary design objective is to increase the data rate, and a promising way to do so (without increasing the bandwidth and power budget)... enhance the wireless communication system design to exploit the time-varying nature of the channel In other words, a jointly adaptive design or a cross- layer design is needed The roles and challenges of the physical layer, MAC layer, and the routing layer are elaborated below Physical Layer The role of the physical layer is to deliver information bits across a wireless channel in an efficient and reliable... other hand, the scheduling sublayer is responsible for the prioritization and the allocation of resource among the competing users Conventional MAC layer designs for wireless systems follow the isolated approach where there is no cross- optimization across the physical layer and the MAC layer For instance, a lot of research effort has been devoted to designing efficient request collection sublayer Examples... theoretical aspects of channel adaptation in wireless communications for point-topoint and multiuser systems with multiple antennas In Part 2, we shall focus on the applications of the channel- adaptive technologies in practical systems such asUMTS In Part 3, we shall focus on some advanced topics such as multiuser scheduling for wideband systems, combined queueing theory, and information theory as well... Line-of-sight MIMO channel model in free space Outage capacity for MIMO channels with CSIR [126] Illustration of channel- adaptive transmitter with perfect CSIT Block diagram of the equivalent -channel model with full CSIT only A discrete memoryless channel with CSIT Capacity achieving configuration for the equivalent channel Ergodic capacity of MIMO channels with ideal CSIT and CSIR A summary of various channel. .. (CDMA2000, UMTS), 3.5G systems (HSDPA, EV-DO, EV-DV), B3G systems (Beyond 3G), wireless LAN (IEEE 802.11a/b/g), ultrawideband (UWB) systems, and WiMAX (IEEE 802.16) as well as Wi-MAN (IEEE 802.20) systems These technologies have spurred a lot of research in the signal processing and cross- layer design for wireless communications Realizing reliable and efficient communications over the wireless channel has been... Algorithms and Performance 374 9.4.3 Continued Evolution 376 9.5 Summary 376 Exercises 377 PART 3 ADVANCED TOPICS 379 Chapter 10 Cross- Layer Scheduling for Wideband Systems 381 10.1 Overview 381 10.2 Overview of DS-CDMA/MISO and OFDM/MISO Systems 383 10.2.1 Multiuser Physical Layer Model of DS-CDMA/MISO Systems 384 10.2.2 Physical Layer Model of OFDMA/MISO Systems 390 10.3 Cross- Layer Scheduling Design for. .. Multitransmit Antenna Example 200 Spacetime Coding for MIMO Channels with Imperfect CSIR 200 5.3.1 Overview of Coded Modulation in AWGN Channels 203 5.3.2 Coded Modulation Design for MIMO Channels with Imperfect CSIR 207 Summary 211 Chapter 6 Cross- Layer Scheduling for Multiuser Systems with Multiple Antennas 6.1 Overview 215 6.2 Multiuser System Performance 217 6.2.1 Examples of System Utility 218 . PUBLICATION Channel- Adaptive Technologies and Cross- Layer Designs for Wireless Systems with Multiple Antennas Channel- Adaptive Technologies and Cross- Layer Designs for Wireless Systems with Multiple. alt="" Channel- Adaptive Technologies and Cross- Layer Designs for Wireless Systems with Multiple Antennas Theory and Applications Vincent K. N. Lau The Hong Kong University of Science and Technology Yu. OFDMA/MISO Systems 390 10.3 Cross- Layer Scheduling Design for DS-CDMA/MISO and OFDMA/MISO Systems 397 10.3.1 Cross- Layer Design for DS-CDMA/MISO Systems 398 10.3.2 Cross- Layer Design for OFDMA/MISO Systems