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Spatial modulation aided zero-padded single carrier transmission for dispersive channels

Spatial modulation aided zero-padded single carrier transmission for dispersive channels
Spatial modulation aided zero-padded single carrier transmission for dispersive channels
In this paper, we consider spatial modulation (SM) operating in a frequency-selective single-carrier (SC) communication scenario and propose zero-padding instead of the cyclic-prefix considered in the existing literature. We show that the zero-padded single-carrier (ZP-SC) SM system offers full multi-path diversity under maximum-likelihood (ML) detection, unlike the cyclic-prefix based SM system. Furthermore, we show that the order of ML detection complexity in our proposed ZP-SC SM system is independent of the frame length and depends only on the number of multipath links between the transmitter and the receiver. Thus, we show that the zero-padding applied in the SC SM system has two advantages over the cyclic prefix: 1) achieves full multipath diversity, and 2) imposes a relatively low ML detection complexity. Furthermore, we extend the partial interference cancellation receiver (PIC-R) proposed by Guo and Xia for the detection of space-time block codes (STBCs) in order to convert the ZP-SC system into a set of narrowband subsystems experiencing flat-fading. We show that full rank STBC transmissions over these subsystems achieves full transmit, receive as well as multipath diversity for the PIC-R. Furthermore, we show that the ZP-SC SM system achieves receive and multi-path diversity for the PIC-R at a detection complexity order which is the same as that of the SM system in flat-fading scenario. Our simulation results demonstrate that the symbol error ratio performance of the proposed linear receiver for the ZP-SC SM system is significantly better than that of the SM in cyclic prefix based orthogonal frequency division multiplexing as well as of the SM in the cyclic-prefixed and zero-padded single carrier systems relying on zero-forcing/minimum mean-squared error equalizer based receivers.
2318-2329
Rajashekar, Rakshith
b6bfc273-4ed6-4cd7-8e3c-31d15549dfc0
Hari, K.V.S.
93c59427-eaf1-49f6-8943-d465d6366d43
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Rajashekar, Rakshith
b6bfc273-4ed6-4cd7-8e3c-31d15549dfc0
Hari, K.V.S.
93c59427-eaf1-49f6-8943-d465d6366d43
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Rajashekar, Rakshith, Hari, K.V.S. and Hanzo, Lajos (2013) Spatial modulation aided zero-padded single carrier transmission for dispersive channels. IEEE Transactions on Communications, 61 (6), 2318-2329.

Record type: Article

Abstract

In this paper, we consider spatial modulation (SM) operating in a frequency-selective single-carrier (SC) communication scenario and propose zero-padding instead of the cyclic-prefix considered in the existing literature. We show that the zero-padded single-carrier (ZP-SC) SM system offers full multi-path diversity under maximum-likelihood (ML) detection, unlike the cyclic-prefix based SM system. Furthermore, we show that the order of ML detection complexity in our proposed ZP-SC SM system is independent of the frame length and depends only on the number of multipath links between the transmitter and the receiver. Thus, we show that the zero-padding applied in the SC SM system has two advantages over the cyclic prefix: 1) achieves full multipath diversity, and 2) imposes a relatively low ML detection complexity. Furthermore, we extend the partial interference cancellation receiver (PIC-R) proposed by Guo and Xia for the detection of space-time block codes (STBCs) in order to convert the ZP-SC system into a set of narrowband subsystems experiencing flat-fading. We show that full rank STBC transmissions over these subsystems achieves full transmit, receive as well as multipath diversity for the PIC-R. Furthermore, we show that the ZP-SC SM system achieves receive and multi-path diversity for the PIC-R at a detection complexity order which is the same as that of the SM system in flat-fading scenario. Our simulation results demonstrate that the symbol error ratio performance of the proposed linear receiver for the ZP-SC SM system is significantly better than that of the SM in cyclic prefix based orthogonal frequency division multiplexing as well as of the SM in the cyclic-prefixed and zero-padded single carrier systems relying on zero-forcing/minimum mean-squared error equalizer based receivers.

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Published date: June 2013
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 352009
URI: http://eprints.soton.ac.uk/id/eprint/352009
PURE UUID: 3c1e59ec-268e-41e2-9ef3-58f50ea115fe
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

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Date deposited: 28 Apr 2013 22:19
Last modified: 18 Mar 2024 02:35

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Contributors

Author: Rakshith Rajashekar
Author: K.V.S. Hari
Author: Lajos Hanzo ORCID iD

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