[...]... Chapter 1 Space-Time Processing in Wireless Communication Receive and Transmit Space-Time Processing Space-time processing can be used either in receive alone, in transmit alone or on both links The factors that in uence these choices are discussed here The key di erence between the two links is the di culty in determining the transmit channel needed for transmit space-time processing Space-time processing. .. Channel Error Spectrum 302 Chapter 1 Space-Time Processing in Wireless Communication 1.1 Introduction With multiple antennas, received and transmitted signals can be separated not only with temporal processing but also with spatial processing We call the combination of spatial and temporal processing space-time processing Space-time processing is a tool for improving the overall economy and efciency... aunt Anita, for all their help and support I also would like to thank my brother Olof for the joy of sharing a boat together and for the adventure of sailing the same boat across the sea to Gotland Finally I would like to thank Maider for her patience and love Contents 1 Space-Time Processing in Wireless Communication 1.1 Introduction 1.2 Outline of Space-Time Processing Schemes... space-time processing enters in and a ect 4 Chapter 1 Space-Time Processing in Wireless Communication di erent aspects of a wireless communication system One classi cation can be based on the system architecture, and covers di erent design choices for the physical layer of the wireless network (Section 1.3) Another classi cation can be based on algorithms and refers to choices of signal processing. .. Noise Estimation 3 Space-Time Decision Feedback Equalization 3.1 Introduction 3.2 Optimal Space-Time Decision Feedback Equalizers 3.2.1 Optimal Space-Time DFE for ARMA Channels with ARMA Noise 3.2.2 Optimal Space-Time DFE for FIR Channels with AR Noise 3.2.3 Optimal Fixed Order Space-Time FIR-DFE for a FIR Channel with... be performed by a space-time receiver are diversity reception, intersymbol interference equalization, and co-channel interference suppression We can classify TDMA algorithms into space-time processing that is decoupled or joint in the spatial and temporal domains Figure 1.7 illustrates this Single User Decoupled Space-Time Approach In space-time processing, we can decouple the space and time processing. .. whitening of the noise plus interference Single User Joint Space-Time Approach In the presence of coupled angle and delay spreads for the desired signal, i.e when the spatial and the temporal spreading cannot be decoupled, a joint space-time processing approach has performance advantages Joint space-time processing is also superior, as compared to decoupled space-time methods, when dealing with delay spread... y in Boston I want to thank him for housing me when I arrived to California and for the great companionship he o ered, then and later I also would like to thank my special friends, Maja Popovic and Kanna Rajan, for all the things we did together during my stay in California Further, my thanks to Roger Germundsson for a great Christmas and New Years Eve celebration and for interesting discussions about... subscribers use di erent spreading codes and can therefore be separated with time processing alone However, space-time processing can improve the performance The uplink and downlink in a communication system can have di erent channel reuse factors We can, for instance, support aggressive reuse in the uplink, since receive space-time processing is easier to implement, and use less aggressive reuse in the downlink... multiple antennas at the base station, they can then 10 Chapter 1 Space-Time Processing in Wireless Communication be separated using space-time processing See e.g 78, 131, 31, 27] 1.3.3 Multiple Access The choice of multiple access (MA), i.e how the available spectrum is shared among users, plays a major role in the design of space-time processing methods due to its e ect on the characteristics of the