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In this paper we propose new Zadoff-Chu (ZC) based synchronization sequences suitable for future broadcast system preambles. While maintaining the same overall structure and length as in the DVB-T2 P1, we replace the synchronization mechanism by a particular combination of ZC sequences capable of carrying one or more signaling bits. We will present the design methodology, the possible ZC constructions...
This paper is devoted to the study of the ergodic capacity of frequency selective MIMO systems equipped with a MMSE receiver when the channel state information is available at the receiver side and when the second order statistics of the channel taps are known at the transmitter side. As the expression of this capacity is rather complicated and difficult to analyse, it is studied in the case where...
Reduced-rank code division multiple access (CDMA) multi-user detection has received a lot of attention recently. The output SINR provided by a reduced-rank receiver depends on the filter rank and is confined between the SINRs of the single user matched filter (SUMF) and the minimum mean squared error (MMSE) receiver. In packet CDMA data networks like HSDPA, the measure of performance is the throughput...
This paper is devoted to the performance analysis of downlink MIMO-CDMA receivers based on a chip rate MIMO equalizer followed by despreading. The various transmit antennas send independent streams and the spreading codes are scrambled Walsh-Hadamard sequences, the various transmit antennas being allocated different scrambling codes. The behaviour of the SINR provided by the receiver is first studied...
Reduced-rank MMSE receivers have been proposed for CDMA communication systems recently. The output SINR, provided by a reduced-rank receiver depends on the filter rank and is confined between the SINRs of the single user matched filter (SUMF) and the minimum mean squared error (MMSE) receiver. The same remark is valid for the bit error rate (BER). In packet CDMA data networks like HSDPA, the measure...
In this paper, we address the performance of downlink CDMA receivers that consist in a reduced rank Wiener chip-rate equalizer followed by a despreading operation. In particular, we tackle the question of whether a performance close to the optimum can be achieved for small values of the rank. To answer this question, it is standard to consider the output signal-to-interference plus noise ratio (SINR),...
In this paper, we continue our study of the performance of W-CDMA transmit diversity (TD) that we started in B. Mouhouche et al. (2005). We compare the performance of two open-loop TD techniques for W-CDMA: The space time transmit diversity (STTD) and the orthogonal transmit diversity (OTD). We use the output SENR provided by a RAKE receiver when combined with each of these diversity techniques. It...
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