CDMA: principles of spread spectrum communication
CDMA: principles of spread spectrum communication
Multiuser Detection
Microwave Mobile Communications
Microwave Mobile Communications
On Limits of Wireless Communications in a Fading Environment when UsingMultiple Antennas
Wireless Personal Communications: An International Journal
An overview of CDMA evolution toward wideband CDMA
IEEE Communications Surveys & Tutorials
Successive interference cancellation algorithms for downlink W-CDMA communications
IEEE Transactions on Wireless Communications
Multi-user detection for DS-CDMA communications
IEEE Communications Magazine
Wideband DS-CDMA for next-generation mobile communications systems
IEEE Communications Magazine
A new receiver structure for asynchronous CDMA: STAR-the spatio-temporal array-receiver
IEEE Journal on Selected Areas in Communications
Dynamic assignment of orthogonal variable-spreading-factor codes in W-CDMA
IEEE Journal on Selected Areas in Communications
A generalized RAKE receiver for interference suppression
IEEE Journal on Selected Areas in Communications
Impact of synchronization on performance of enhanced array-receivers in wideband CDMA networks
IEEE Journal on Selected Areas in Communications
Interference subspace rejection: a framework for multiuser detection in wideband CDMA
IEEE Journal on Selected Areas in Communications
EURASIP Journal on Applied Signal Processing
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We proposed recently a new technique for multiuser detection in CDMA networks, denoted by interference subspace rejection (ISR), and evaluated its performance on the uplink. This paper extends its application to the downlink (DL). On the DL, the information about the interference is sparse, for example, spreading factor (SF) and modulation of interferers may not be known, which makes the task much more challenging. We present three new ISR variants which require no prior knowledge of interfering users. The new solutions are applicable to MIMO systems and can accommodate any modulation, coding, SF, and connection type. We propose a new code allocation scheme denoted by DACCA which significantly reduces the complexity of our solution at the receiving mobile. We present estimates of user capacities and data rates attainable under practically reasonable conditions regarding interferences identified and suppressed in a multicellular interference-limited system. We show that the system capacity increases linearly with the number of antennas despite the existence of interference. Our new DL multiuser receiver consistently provides an Erlang capacity gain of at least 3 dB over the single-user detector.