Shu-Ming Tseng

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The use of sets of multiple spreading sequences per user in multicarrier code-division multiple-access (CDMA) is investigated. Each user is assumed to have a distinct set of spreading sequences, with a different spreading sequence for each carrier in each user’s set. We show that when these sets of sequences are chosen to be the mutually orthogonal (MO)(More)
In this paper, we propose a mobile patient system using common approach sensor platform called the wireless based patient sensor platform (WSP, sensor node) which has remote access capability. The goals of the WSP are to establish: standard sensor node (system on module), a common software .The proposed platform architecture (sensor node) offers(More)
The full parallel multistage detection for multiple-input multiple-output systems has less processing delay and better performance than the vertical Bell Laboratories layered space–time detection scheme. However, due to the disadvantage of full parallel interference cancellation, its performance degrades when the received power of the substreams at one(More)
We consider multiuser MIMO CDMA systems where each user has multiple transmit antennas and different transmit antennas of the same user use the same spreading code. Because transmit antennas of the same user use the same spreading code, inter antenna interference would degrade the system performance. We propose a novel decision-window-based data detection(More)
In this paper, we design the full-rate full-diversity quasi-orthogonal space time block code (QOSTBC) matrix for decode-and-forward (DAF) relay networks with four independent single-antenna source nodes, a single-antenna destination node and a single receive four-trans mit-antenna relay node. In this scheme, we consider the channel states between the four(More)
Recently, a training-based vector channel estimation scheme has been proposed for single-user CDMA systems with aperiodic spreading codes. In this paper, we extend it to the reverse link of multiuser MIMO CDMA system. We also use the generalized MMSE multiuser detector to suppress multiuser interference so then we can get good initial vector channel(More)