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Binary Offset Carrier (BOC) modulated signal has multi-correlation peaks, whose S curve of Phase Detector (PD) having several cross-zero points, this can lead to do error judge on receiver tracking. So, a new tracking algorithm is proposed in this paper, it using the quadratic BOC to removing the effect of several cross-zero points on S curve. The comparing analysis and simulation is to conventional...
In this paper we introduce an improved version of the turbo layered orthogonal lattice detector (T-LORD), recently presented. This implementation, namely K-Best T-LORD, misses the performance of the turbo MAP detector by only few tenths of dB in various configurations, like the fully enhanced T-LORD. However, its complexity is quadratic in the number of transmitting antennas instead of exponential...
In this paper we develop an optimal receiver for an asynchronous IDMA system. A super-block structure is used to formulate the band diagonal matrix model for asynchronous IDMA. We show that the cost function for the ML decoder can be viewed as a path metric through a structured trellis. We use a dynamic programming algorithm to find the maximum likelihood transmitted bit sequence. We compare the performance...
This paper addresses a low complexity multi-rate multiuser detector (MUD) for the uplink multi-carrier code division multiple access (MC-CDMA) systems. The new MUD is an iterative groupwise receiver with the assistance of soft information to refine the interference estimates to enhance the interference cancellation capability. The users are first classified into different groups according to their...
The estimation of receiving impulse template can be simplified by the transmitted reference (TR) signaling scheme in ultra-wideband communication. However, in multiuser environment, the TR scheme would be severely interfered for its non-coherence. By modulating the transmitted-reference with a pseudo-random code, we propose an analog LMS detection based on minimum mean-square error criterion to suppress...
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