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Parallel interference cancellation (PIC) is considered a simple yet effective multiuser detector for direct-sequence code-division multiple-access (DS-CDMA) systems. However, its performance may deteriorate due to unreliable interference cancellation in the early stages. Thus, a partial PIC detector, in which partial cancellation factors (PCFs) are(More)
Parallel interference cancellation (PIC) is a well-known multiuser detection algorithm in direct-sequence code-division multiple-access (DS-CDMA) systems. It is typically implemented with a multi-stage architecture. One problem associated with the PIC is that unreliable interference cancellation may occur in the early stages and the system performance may(More)
In this paper, we evaluate a synchronization scheme for carrier frequency offset (CFO) and tuning offset (TO) in IEEE 802.16e subscriber station (SS). In addition, we integrate both inner receiver and outer receiver to evaluate the performances under SUI-4 channel. According to the simulation results, the proposed algorithms resolve CFO and TO effectively(More)
In this paper an efficient channel estimation algorithm under different mobile velocities in orthogonal frequency division multiplexing (OFDM) systems is considered. Conventional channel estimation algorithms track adaptively time-varying channels using high performance approaches. However, the power consumption for these algorithms are usually tremendous.(More)
Partial parallel-interference-cancelation (PIC) is a well-known multiuser detection technique for DS/CMDA systems. Conventionally, partial-cancelation-factors (PCFs) are optimally derived and kept constant in a designated interval. Recently, a special kind of partial PIC was proposed. In the approach, PCFs are adaptively trained (chip-by-chip) using the(More)